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Introduce 1tb hard disk

This section describes 1tb hard disks

On our website, you can explore a variety of 1tb hard drives, including models as well as expansion options. We provide detailed pricing information so that you can make an informed decision. Whether you're looking for an internal 1tb hard drive for your desktop or an external 1tb hard drive for added portability, we've got you covered.

Our website provides a comprehensive list of 1tb hard drive prices on the amazon website, which we will update even daily. You can also find information about 1tb hdd laptop hard drives and their corresponding prices, allowing you to choose the perfect storage solution for your laptop.

If you want to obtain 1tb external hard disk information can also be found in the website, we also have 1tb laptop related consultation information, I believe you can find the product you want to buy from here.

If you are interested in the speed and performance of SSDS, we have provided detailed information on 1tb SSDS and their prices. We also cover 1tb internal hard drive prices and various laptop hard drive options to meet your specific needs.

With our user-friendly interface, you can easily browse existing products and compare prices and features. Our goal is to help you find the right hard drive at the right price, ensuring you get the best value for money.

Visit our website today and discover the perfect 1tb hard drive for your storage needs. Whether for personal or professional use, we can meet your needs.

Historical records of 1Tb hard disks

On May 16, 2007, Hitachi Global Storage produced the world's first 1TB hard drive, named the Deskstar 7K1000.
Hitachi Deskstar 3.5-inch 7K1000 hard disk is 1TB, using SATAII interface, 7200rpm, delay 4.17ms, seek time 8.5ms, 32M cache, 5 disks with 10 magnetic heads design.
The first Hitachi 1TB hard disk is priced at 3,199 yuan. On January 24, 2011, Kingsoft Network announced the launch of a network hard disk "T disk" with a capacity of 1TB(about 1024GB).

1TB refers to the storage capacity of the SSD, that is, 1TB, which is equal to 1024gb. SSD storage capacity is usually expressed in GB, TB and other units, where 1TB is equal to 1024GB. Therefore, 1TB SSD can store a large amount of data to meet the daily storage needs of users.

Precautions for Purchasing a 1TB SSD

When buying a 1TB SSD, there are a few things to be aware of:

1. Interface type: SSDS have multiple interface types, such as SATA and PCIe. You need to choose the appropriate SSD based on the type of interface supported by your computer's motherboard.

2. Performance parameters :SSD performance parameters include read/write speed and IOPS. You need to choose the right performance parameters for your needs.

3. Brand reputation: Choosing well-known brands and good reputation of solid-state drives can ensure product quality and after-sales service.

Install a 1TB SSD

1. Turn off the computer, unplug it, and open the case cover.

2. Locate the hard disk port on the computer mainboard, insert the SSD into the hard disk port, and secure the SSD using screws.

3. Ensure that the data cable and power cable of the SSD device are securely connected.

4. Cover the chassis, plug in the power plug, start the chassis, and check whether the SSD device works properly.

maintain the 1TB SSD

This section describes how to use and maintain the 1TB SSD

1. Backup data regularly: Although the seismic performance of solid state drives is better, there is still the possibility of data loss. Therefore, it is recommended to back up important data regularly, just in case.

2. Avoid frequent read and write operations: Frequent read and write operations affect the service life of SSDS. Therefore, it is recommended to avoid frequent reads and writes when using, especially when transferring large amounts of data.

3. Update drivers timely: In order to maintain the best performance of ssd, it is recommended to update drivers and firmware regularly.

1TB solid state drive is a kind of high performance and high capacity storage device, which has a wide application prospect. By understanding the basic concepts, purchase considerations, installation steps, and usage and maintenance recommendations, users can better use and maintain their 1TB SSD.

2Tb Hard disk introduce

On our website, you'll find a diverse selection of 2 TB external hard drives and hard disks to meet your storage needs. We offer comprehensive information on both the drives and disks, including their prices.

The 2 tb external hard drive provides a convenient and portable solution for expanding your storage capacity. Whether you need to backup your important files, store large media collections, or have additional space for your projects, our range of 2 TB external hard drives has got you covered.

We provide detailed pricing information for both the 2 tb hard disk and the external drives, allowing you to make an informed decision based on your budget. You can easily compare the prices and features of different options to find the best fit for your requirements.

With our wide assortment of 2tb hdd options, you'll have the flexibility to choose the one that suits your specific needs. Whether it's for personal use, professional work, or gaming, we have the right drive for you.

Browse our website to explore the available 2 tb hard disk and external hard drive options, and find the perfect storage solution at the right price. Our team is dedicated to providing you with the best information and selection to ensure your satisfaction.

In this digital age, technological advances and the development of the Internet have driven people to rely more and more on electronic devices to meet various needs, such as office, study or leisure and entertainment. In this context, hard disk as a key data storage tool, is particularly important.

three highly regarded 2TB hard drives

This article will introduce you to three highly regarded 2TB hard drives.

The first is the Blue disk, a hard drive launched by Western Digital (WD) for everyday use. The hard drive has a capacity of 2TB, which is enough to meet the large-scale storage needs of most users. It is equipped with SATA interface to ensure fast data transfer efficiency, thus effectively improving work efficiency. In addition, the hard drive is equipped with power management and data recovery functions to help users better protect important files.

The next thing to recommend is the wd blue plate under the climbing brand. This hard drive also offers 2TB of massive space and is compatible with SATA6Gb/s interface, which significantly improves read and write speeds. In addition to the above features, it also adds backup data and energy-saving functions to help users use resources more efficiently. What's more, the price of this product is quite affordable and extremely competitive.

The last hard drive we want to introduce you to is the Coolfish 2.5-inch notebook hard drive from Secagate. The drive features a SATA3 interface and 128MB cache, further enhancing overall performance. Notably, its ultra-thin body of only 7mm makes it ideal for laptops or other small devices. In addition, this hard drive is an ideal backup storage device due to its excellent stability and long life.

The above three 2TB hard drives have their own unique qualities, both in terms of capacity and performance. If you're looking for a high-performance, high-capacity hard drive solution, take a look at these products. We believe that they can provide you with satisfactory choices.

Western Digital (WD)2TB mobile hard disk, large capacity storage, high-speed USB3.0 transmission, lightweight and portable, compatible with multiple devices, advanced encryption technology to ensure data security. Can be used as external storage to expand computer capacity, stable and durable, cost-effective. Is the data storage and management of the right hand.

From photos and videos on mobile phones to work files and study materials on computers, digital information has become a part of our lives. How can we ensure that this data is safely and conveniently around us? The answer is Western Digital's (WD) 2TB portable hard drive.

This 2TB portable hard drive is like a giant ship in the sea of data, easily carrying all your important information. Whether it's years of family photos, important documents from work, or massive data from study, it can store one by one to make your digital life more colorful.

Western Digital's (WD) Elements SE new family of portable hard drives uses a USB3.0 interface to ensure high-speed data transfer. Compared with the traditional USB2.0, USB3.0 has a qualitative leap in transmission speed, allowing you to no longer wait anxiously when copying large files, improving work efficiency.

At the same time, this 2.5-inch mechanical hard drive is lightweight and easy to carry. It can be easily put into a backpack or pocket, whether it is a business trip, travel or daily carry, without worrying about the storage of data. Moreover, it is compatible with mobile phones, laptops and other devices, whether it is Android or Apple system, it can be easily connected to achieve fast data transmission and backup.

In terms of security, Western Digital (WD) has also done an excellent job. The hard drive uses advanced encryption technology to protect your data from being leaked. Even if the hard drive is accidentally lost or stolen, there is no need to worry about data security.

In addition to storage functions, this portable hard drive can also be used as an external storage device to expand the capacity of your computer. For users with limited storage space, this is undoubtedly a boon. You can save files you don't use frequently on your hard drive to free up storage space on your computer and keep it running more smoothly.

Of course, as an excellent portable hard drive, Western Digital (WD) 2TB also has excellent stability and durability. It uses high-quality materials and manufacturing processes to ensure stable performance over a long period of use. At the same time, it has also undergone rigorous quality inspection and durability testing to ensure that it can work properly in a variety of environments.

Western Digital (WD) 2TB mobile hard drive is an excellent product with large capacity, high-speed transmission, lightweight and portable, safe and stable. Whether you are an individual user or an enterprise user, it can meet your data storage and management needs. In the age of information explosion, let this mobile hard disk become your digital life's right hand!

Although this portable hard drive is powerful and has excellent performance, its price is very affordable. Compared with similar products, its cost performance is very high. If you're struggling with data storage and management, consider this Western Digital (WD) 2TB portable hard drive. I believe it will bring you a new experience.

4 tb hard disk introduce

Looking for the best 4 tb hard disk at an affordable price? Look no further! Our website offers a comprehensive range of 4 tb hard disks to meet your storage needs.

With our detailed listings of 4 tb hard disk prices, you can easily compare and make an informed decision. Whether you're a professional requiring massive storage for your work or a tech enthusiast looking to expand your storage capabilities, we have the perfect option for you.

The 4 tb hard disk provides ample space to store your large files, media collections, and critical data. Its reliability and performance ensure smooth and efficient data access.

Our website makes it easy for you to browse through various brands and models of 4 tb hdd, considering factors such as price, speed, and durability. We strive to provide you with the most up-to-date information to help you find the ideal hard disk that fits your budget and requirements.

Don't compromise on storage. Explore our selection of 4 tb hard disks and find the one that offers the best value for your money. Start organizing and protecting your digital assets today!

WD Blue Disk 4TB mechanical hard disk experience large capacity, durable

With the development of science and technology, the use of hard disk environment and needs are constantly changing. For the installed machine, although the SSD has become the first choice for many performance seekers due to its excellent read and write speed. But after all, mechanical hard disks still have advantages in terms of price and stability. Therefore, despite the superior performance of solid state drives, mechanical hard drives are still one of the main storage devices at present. In today's increasingly large number of files need to be stored, one or more excellent mechanical hard disk is very important!

Western Digital (WD), as the world's well-known hard disk manufacturer, classifs the 3.5-inch hard disk products by the color of the front label of the hard disk. The red disk is the NAS storage disk, the blue disk is the installed storage disk, the black disk is the high-performance game disk, and the purple disk is the smart video disk...... Let's wait.

What we are going to experience today is the Western Digital Blue disk designed for DIY installed storage. In terms of capacity, I chose 4TB this time. It uses NoTouchTM ramp loading technology, 256 megabytes of cache, 5400 RPM, and comes with a 2-year warranty.

Western Digital Blue disk 4TB

Western Digital Blue disk 4TB, the design takes into account the protection of components and data security. All components and chips are on the back of the PCB board, which can avoid damage caused by collisions, and also prevent dust.

After tasting the exterior, we talk about the interior design. Western Digital Blue Drive uses NoTouchTM ramp loading technology, which works by placing the recording head in a safe position away from the surface of the disk, so that even in the event of a sudden power failure, the head of the hard drive can automatically return to the cradle, which can better protect data and make it more secure and reliable.

In addition, the hard disk also has a 256 MB cache, which can help improve the performance of the hard disk, especially when processing large files or doing a lot of random read and write operations. In addition, the speed of 5400 RPM can provide a stable read and write speed, up to 180MB/s or more, which is very advantageous for the transmission of large files.

For hard disks larger than 2TB, GPT (GUID partition table) should be selected for initialization, because MBR (Master boot record) only supports up to 2TB of hard disk space, and the excess will be unusable. GPT, on the other hand, does not have this limitation and can support more hard disk space.

useful for addition

In addition, if you want to use a 4TB hard drive as a system disk, you need to make sure that your computer supports UEFI boot. Only computers that support UEFI boot can boot from a GPT hard drive. If the host does not support UEFI boot, the 4TB hard disk can only be used as a file storage disk.

After the new disk is created, the actual available capacity of the 4TB Western Digital Blue disk is 3.63TB. Users do not need to worry about why the capacity is reduced, it is normal to have a difference between the nominal capacity of the hard drive and the actual available capacity. This is because hard drive manufacturers and operating systems calculate hard drive capacity differently. Hard disk manufacturers usually use decimal to calculate, while operating systems use binary.

With the CrystalDiskInfo software, we can obtain detailed information about the hard drive, including speed, interface, transfer mode, and supported features. The speed of the Western Digital Blue Disk 4TB is 5400RPM, the interface is Serial ATA, and the transmission mode is SATA/600, which are important factors affecting the performance of the hard disk. In addition, it also supports S.M.A.R.T., TRIM, NCQ and other features that can help improve the performance and reliability of your hard drive.

Western Digital Blue Disk 4TB hard drive operating temperature of 19 degrees, after several benchmarking software tests, its temperature range of 19-39 degrees, which can ensure that it always maintain the ideal performance during operation.

In the HD Tune test, the average read was 383.2MB/s and the burst rate was 405.4MB/s. The average write rate is 139.3MB/s and the burst rate is 404.1MB/s. It can be seen that the Western Digital blue disk 4TB hard disk is very stable in performance.

The Crystal Disk Mark multi-queue (QD32) reads 212.65MB/s and writes 198.9MB/s, which is quite good, even exceeding the official maximum speed. It's hard to believe that a 5400RPM hard drive can achieve such a high level of sophistication.

TxBENCH is a professional hard disk speed measurement software, through the benchmark test, this Western Digital blue disk 4TB mechanical hard disk read speed reached 194.349MB/s, write speed reached 198.879MB/s.

ATTO software for hard disk

ATTO software is one of the most widely used drive benchmarks still in use today. In the benchmark test, the standard queue depth was 4, the Western Digital Blue Disk 4TB reached a peak write speed of 189.55MB/s and a read speed of 199.22MB/s, and the read and write performance reached a sequential access rate peak after 4KB.

Today's ultra HD movies may often require 30GB of storage space. Therefore, a 4TB hard drive is very suitable for storing these large files, and I often use the hard drive to store some shooting photos and videos. In the process of about 100G large file copy test, the file transfer efficiency of WD blue disk 4TB hard disk is about 150MB/s, for daily use, it can play a very stable and excellent performance when dealing with large files.

In summary, Western Digital (WD) blue disk is moderate in price and balanced in features, whether it is used as a RAID group or as a file disk, it is a good choice. In my testing, it ran quietly, with low temperatures, large capacity, and consistent performance, making it ideal for storing large numbers of files. Both home and office are also fully sufficient, and the 2-year warranty also lets us avoid worries.

8TB hard disk introduce

8TB mobile SSD review The perfect alternative to mobile mechanical hard disks
We offer the 8tb hard disk price and 8tb hard disk lists

Now we recommend the brand is samsung.

The application of mobile mechanical hard disk has at least a decade of history, and people love and hate it: love is that it has a large capacity (up to 5TB), hate is that the internal complex mechanical structure is too delicate, bump or fall may cause serious damage and data loss, weak performance for TB level file transfer is more like a nightmare. Therefore, the high capacity and drop resistant mobile solid state drive PSSD is increasingly attracting people's attention, such as Samsung's latest T5 EVO.
As a new member of Samsung's mobile solid state drive family, Samsung T5 EVO has achieved a high-energy Evolution relative to the same brother T5, EVO is the abbreviation of Evolution, not only continues the high-performance family genes, but also further deepens the concept of "portability", and has a capacity beyond the traditional mobile mechanical hard disk. It can accommodate more large files, high-resolution videos, photos, and games for work and play.
Let's take a look at the features of the Samsung T5 EVO mobile SSD
1, the first deviation from the size of the name card, the body is more compact;
2, high quality rubber shell, provide 2 meters of fall protection;
3, the metal ring buckle design is more portable;
4, capacity of 2TB, 4TB and 8TB optional;
5, the original core components, continuous read and write performance of up to 460MB/s;
6, full platform compatibility, support PC/Mac, iPhone15/Android smart phones, tablets and other devices.

1 Smaller and more portable MAX

Samsung T5 EVO mobile solid state drive packaging with a new cover design, from the top to the bottom of the progressive blue background to set off the T5 EVO product close-up, the lower left corner with a bold large font to identify the product model, the lower right corner is marked with 460MB/s read speed and 8TB super capacity.
The T5 EVO emphasizes the design concept of "small, lightweight and ergonomic", which deviates from the size of the business card for the first time, and the body size of 40*95*17mm is more compact and compact, weighing only 102 grams, and can be easily held by one hand, giving people a feeling of love. The end of the body is equipped with a metal ring buckle, which can be easily fixed on the backpack or luggage, and the titanium gray color has a high fashion sense, which is very natural and harmonious with the gray and silver color equipment.
The body is in all-black color, with the "SAMSUNG" brand logo on the front. The rubber shell has excellent grip feeling and anti-slip effect, and also has excellent anti-external impact performance, with 2 meters of fall protection, and low thermal conductivity, which can prevent heat accumulation resulting in low temperature burns.
On the back of the body is the Portable SSD T5 EVO product logo.
The T5 EVO is equipped with a mainstream Type-C interface at the top, and the indicator light is hidden under the cover plate for a strong overall sense.
One end of the metal clasp identifies the product model, capacity, operating voltage and current, S/N code and various certification information.
The Type-C to C cable comes with excellent all-platform compatibility, making it easy to transfer data between PC/MAC, Apple iPhone15/Android smartphones and tablets.

2 Benchmark Continuous read/write performance is excellent

The Samsung T5 EVO we tested is an 8TB version, which means it can store more than 2 million 3.5MB photos, 1.8 million 4MB music files, or 3,500 2GB videos. Crystal Disk info shows that its actual capacity is 8001.5GB, at 26℃ room temperature idle temperature is only 28℃, using UASP protocol and SATA600 transmission mode, equipped with Type-C interface support USB3.2 Gen1 standard.
It can be seen from the figure below that the USB3.2Gen1 interface bandwidth is 5Gbps, and the traditional mechanical mobile hard disk basically uses such an interface, but the read and write speed usually can only reach about 120MB/s, while the Samsung T5 EVO nominal read and write speed is up to 460MB/s, which is 3.8 times that of the mobile mechanical hard disk. The bandwidth of the USB3.2 Gen1 interface is almost full.
In the Crystal Disk Mark test, the highest sequential read and write speeds of the Samsung T5 EVO 8TB were 461.05MB/s and 463.6MB/s, both of which reached the nominal value of 460MB/s and also met the performance level of high-speed USB3.2Gen1 mobile storage devices. Random performance is also up to 43K IOPS and 40K IOPS.
We also found a 500GB mobile mechanical hard disk for comparison, after testing it can be seen that its maximum sequential read and write speed is only 82.19MB/s and 80.89MB/s, it can be seen that the Samsung T5 EVO 8TB sequential read and write performance is more than 5 times its, and the random performance is more than 124 times!
In ATTO Disk Benchmark, a commonly used mobile storage device test software, the Samsung T5 EVO 8TB's 4KB file read/write speed reached 69.34MB/s and 25.6MB/s respectively, and the read/write speed from 256KB exceeded 420MB/s. After 512KB, the read/write speed reaches 440MB/s, which is close to the nominal level.
In order to improve the performance of consumer solid state storage devices, the industry generally adopts the SLC cache strategy, Samsung named it TurboWrite technology, that is, to carve out part of the free capacity to simulate SLC read and write, store data at the fastest speed to write SLC cache, and then in free time to move the data to the conventional storage area. Therefore, the size of SLC cache directly affects the user's experience of large file transfer.
In HD Tune Pro, we wrote 280GB data to Samsung T5 EVO 8TB (higher than this value software will directly report I/O errors), its read and write speed is above 447,000KB /s, the curve is very flat without speed loss, which indicates that its TurboCache space is much higher than 280GB. Effectively ensure the efficiency of users copying high-definition video materials, 3D modeling materials and other large files.

3 File read and write test speeds up to five times faster than mechanical portable hard disks

In the PCMARK10 data disk benchmark test, we will continuously write 15GB of data to the Samsung T5 EVO 8TB, and visually display it in a numerical way, and the final score is 915 points, the bandwidth is 142.99MB/s, and the average access time is 148us. Compared with the USB3.2 Gen1 mobile mechanical hard disk performance has a significant performance improvement.
Due to the limitations of the Windows system Capital Manager, the actual file transfer speed of the mobile storage device will be somewhat different from the benchmark test. We copied 7.5GB of files from the mobile mechanical hard drive to the desktop, and reached a reading speed of more than 70MB/s in the stable phase; The same file is then copied from the desktop to the mobile mechanical hard disk, and the write speed is also more than 70MB/s in the stable stage.
Then copy this 7.5GB file from the T5 EVO 8TB to the desktop, reading speed can reach 380MB/s or more in the stable phase; The same file is then copied from the desktop to the T5 EVO 8TB, and the write speed reaches more than 400MB/s in the stable phase. It can be seen that the actual transmission speed of Samsung T5 EVO is still more than 5 times that of this mobile mechanical hard disk, which greatly improves the storage efficiency of data.
In addition, Samsung T5 EVO can also be directly connected To Apple iPhone15 series smart phones through the randomly equipped C To C data cable, and can perform file management in the system's built-in "file" APP, and Pro/Pro Max models support the ProRes HDR format video directly recorded to Samsung T5 EVO. The 8TB capacity allows for up to 556 minutes of shooting, making it a useful storage device for vloggers.

4 Comprehensive test high efficiency, energy saving and low heat

In addition to the capacity of up to 8TB and the performance of far more than traditional mechanical hard disks, the Samsung T5 EVO also has a good performance in terms of power consumption and heat control. The comparison test of the POWER-Z tester shows that the POWER consumption of the traditional mechanical mobile hard disk is about 0.8W (that is, voltage x current) at idle (non-hibernation stop). The peak power consumption of high intensity sequential writing is about 3.5W.
The idle power consumption of the T5 EVO 8TB is only about 0.3W, and the high-intensity sequential write power consumption is only about 2.6W, and the performance of the T5 EVO 8TB is three times that of the mechanical mobile hard disk, which can greatly extend the battery life of the laptop.
In terms of heat control, the T5 EVO has built-in Samsung Dynamic Thermal Guard technology to prevent overheating and keep it at the right operating temperature, so that it can maintain peak performance for long periods of continuous use. At the same time, the rubber shell has the characteristics of low thermal conductivity, the surface temperature at 25.9℃ at idle time is 28.4℃, after 40 minutes of high-intensity sequence writing test temperature is only 44.7℃, in line with the requirements of the international safety standard IEC62368-1, to eliminate the risk of low temperature burn.

5 Samsung Magician features full AES256 hardware encryption two-step setup

In addition to greater portability and higher capacity, the SAMSUNG T5 EVO also supports AES256-bit hardware encryption, which is easy to set up and manage with SAMSUNG PORTABLE SSD and SAMSUNG Magician. The Windows and MacOS versions of the SAMSUNG PORTABLE SSD are included, and users can also download Android versions from the address provided by the built-in Notepad file.
Of course, the new Samsung Magician storage device management software is more comprehensive, supporting all Samsung brand storage devices (including solid state drives and mobile solid state drives, etc.) health status check, firmware updates and security erase operations, but also can perform read and write performance benchmarks on the device.
Samsung Magician also includes all the features of Samsung's mobile SSD management software, which means that users can only install this software. In the two-step Security Setting, you can enable password security protection mode and change your name and password at any time. If security mode is turned off, the password already set will be deleted.
After setting the password, the safe mode will be enabled, and the T5 EVO will be connected to the computer again, and the Samsung magician will pop up the password input box, at this time, you can not see the internal data of the T5 EVO, and you can not write the data, and you can enter the correct password after the normal file reading and writing operation.
In addition, in the Driver Details, you can see the Samsung T5 EVO serial number and firmware version and other information, if the serial number below the blue "genuine" two words, it means that the user bought the official genuine.

6 Write at the end

As a mobile SSD for mainstream users, Samsung T5 EVO will not only further carry forward the tradition of lightweight and portable, but also perfectly solve various pain points, such as the 460MB/s read and write speed is almost up to the level of SATA built-in SSD, Type-C interface can be compatible with all platform devices, and 2-meter anti-fall data is more secure. The capacity of up to 8TB is the last "straw" that crushed the "camel" of the mobile mechanical hard disk.

We provide 500gb hard disk prices and a 500gb hard disk list. The price of a 500gb hard disk notebook varies from platform to platform. Of course, there are some people who want to use this hard disk as an external storage device to store your various files.

Hard disk 500g and 1t difference

The main differences between a 500GB hard disk and a 1TB hard disk are storage capacity, price, performance, and application scenarios.
Storage capacity:
The storage capacity of a 500GB hard disk is 500GB.
The storage capacity of a 1T hard disk is 1000GB, twice that of a 500GB hard disk.
Price:
1T hard disks are usually more expensive than 500G hard disks, but in the case of the same model from the same manufacturer, the price difference is not much.
Features:
In the case of the same model, the speed of a 1T hard disk may be faster than a 500G hard disk, and the write life will be longer.
For pure mechanical hard disks, 500G and 1T hard disks are the same in addition to the capacity difference, such as the speed is 5400 RPM, so there is no difference in speed and quality.
Application scenario:
The 500G hard disk is suitable for users who do not need much storage space, or as auxiliary storage.
The 1T hard disk is suitable for users who need a large amount of storage space, such as users who need to store a large number of videos, photos, or large software. The 1T hard disk provides more storage space for file classification and management.

In summary, which hard disk to choose depends on the actual needs of the user. If the user has a large demand for storage space, or wants to obtain faster hard disk speed and longer write life, then 1T hard disk may be a better choice. If the user has little need for storage space, or the budget is limited, then 500G hard disk is also a practical option.

Below is a comparison of the performance and price differences of several brands of 500gb hard disks

One, Seagate MomentusThin500GB5400 turn 16MB

The laptop's 500g hard disk is very quiet and very quiet. Small and light. The speed of the boot will also become faster, the use of very fast, any notebook can be used. The quotation on the market is cheaper.

Second, HGSTZ5K500500GB5400 to 8MBSATA2

This hard disk has an U3 case for backup. Good copy speed, stable, almost no sound. Less heat, reliable quality, moderate lightness, good appearance, the evaluation speed is also relatively fast, read and write speed strengthened a lot.

Third, Western Digital 500GB5400 turn 8MSATA3 blue disk

This hard disk runs stable, low noise, practical one, good design, exquisite workmanship, worth buying, runs very smoothly, performance is very good, very practical economy, stable, fast, cost-effective.

Four, HGST7K500500GB7200 to 32MBSATA3

This hard disk runs fast, the performance is 2 times that of 5400 RPM quiet, large programs and folders open second, the hard disk indicator light is basically not bright, the boot speed is improved, the capacity is large, and the cache is 16M. Performance is still very good. The temperature control is OK.

Five, Seagate Momentus500GB7200 to 16MBSATA2

The advantage of this hard disk is that the stability is very good, in line with the consistent quality of high-end brands, read and transfer rate is very high, fast, and the performance of playing games and drawing is significantly improved. The heat is good, too.

Special introduction to Samsung hard disks

Notebook hard disk has different brands, a variety of different brands under the price will be different, to say which quality is good? Which is the best quality, according to their own opinions, the above small series for you to introduce these are the most popular on the market, not only are the products under the big brand, and in the price is relatively moderate, many users can buy. While purchasing, users should pay attention to the connection of the interface. The introduction of small series is over here, and I hope to help you users.

It has been nearly three years since the release of the Samsung T5 series of mobile solid-state drives, and with its excellent performance, beautiful appearance and high security, Samsung T5 has become a star product in the field of PSSD. In the face of today's increasingly superior performance of SSD products, your T5 is not the time to upgrade it?
However, it is good that the Samsung T7 Touch released some time ago, whether it is performance or security, it is a brilliant continuation of the Samsung T series, but in the face of the expensive price or let many people a little down. In fact, Samsung T7 Touch should be upgraded Samsung T5 Plus version, its real successor should be the Samsung T7 mobile solid state drive we want to see today, on the basis of T7 Touch removed to reduce the fingerprint recognition module, more in the price, as for its performance how? Let's take a look at it right away.

Interface

Appearance appreciation: three colors optional, card-like size In appearance, Samsung T7 and T7 Touch version use beautiful lightweight aluminum alloy shell design, fine polishing coating process to make this PSSD more business texture, in addition to Mars infrared, Samsung T7 also aurora blue and space gray, business fashion color choice. What we got this time is the metallic red Mars red version, which is more youthful color and vitality than the classic black and fashionable silver of the Samsung T7 Touch.
Samsung T7 Mars red, Samsung T5 front in addition to Samsung logo, there is no embellishment, compared with T5, T7 will also delete the positive model, moved to the back, the first glance to give people the feeling is simple and refreshing.
The entire hard disk weighs only 58g, is the size of a card holder, and can be slipped into a pocket. Compared with the previous generation, the size has not changed much, the thickness is only 80mm, and the circular processing is more close to the palm, which brings the user a comfortable grip. In addition, it has a good anti-fall ability, according to the official introduction, it can withstand the impact of 2m height fall, so that you do not have to worry about data loss due to hard disk fall.
The back still continues the simple design style, but the product name "Samsung Portable SSD T7" is written in the lower right corner, so the design retains the overall technical texture and advanced sense of PSSD to the greatest extent. With a smooth metallic appearance, elegant rounded curves and beautiful colors, it can become a beautiful landscape anywhere.
On the side of the Samsung T7 body is some product information such as capacity, serial number and power consumption. As can be seen from the above text, we got a 500GB version of the hard disk this time, in addition to 1T/2T, a total of three capacities, you can choose according to demand.

Type-C Indicates the interface

The other side of the fuselage is a Type-C interface, this time using USB 3.2 Gen2 (10Gbps) interface, can be backward compatible with USB3.0, the interface is not positive or negative, it is very convenient to use. In addition to the main control, the performance of the PSSD largely depends on the presence or absence of this interface. In addition, Samsung has also designed an indicator light for this PSSD, which is also different from the Samsung T7 Touch.
Two data lines are attached, C to C+C to A, good interface compatibility
In addition to the hard disk body and the necessary manual, the standard two data cables, one is Type-C to Type-C, the other is Type-C to Type-A, can help users easily connect with computers, mobile phones, cameras, tablets and other devices quickly, to ensure that users outside mobile office, You can also get a reliable connection anytime, anywhere.
Performance test: USB 3.2 Gen2 really works

Test session:

Most of the SSD test projects used are new versions of the test software, including CDM 8.3, CrystalDiskMark7.0, Anvil Pro, etc., as follows
CrystalDiskInfo Information identification:
Through the CrystalDiskInfo software, we can roughly understand the running status of the SSD. For example, we can see that the Samsung T7 mobile SSD firmware version we tested this time is FXG41P2Q, which supports S.M.A.R.T function and NVM Express1.3 standard. In addition to the lack of fingerprint recognition, the parameters and T7 Touch are consistent, and how about the performance? Let's take a look at it.
CrystalDiskMark test:
In the CrystalDiskMark test, the Samsung T7 500GB mobile solid state drive in the 1G file test sequence read and write speed up to 976.47MB/s, 886.78MB/s, close to the official theoretical speed value: read and write 1050MB/s, 1000MB/s; The 4K random read/write performance reaches 26.53MB/s and 42.38MB/s.
ATTO Disk Benchmark
Next, the ATTO Disk Benchmark test is used for continuous read and write tests using files of different sizes. The read and write speed is slightly slower for small files of 128KB, but the read and write speed has stabilized for files of 256KB.
Continuously read and write temperature tests
We tested the temperature with continuous data read and write operations on the Samsung T7 portable hard disk, and measured the surface temperature with a thermal imager at 25°C. We can see that the temperature of the SSD at this time is only 42.5 ° C, due to the use of encapsulated phase change materials (ePCM), can absorb heat and gradually release heat to maintain the best working temperature, will not affect the daily use of users, a good guarantee that the performance of Samsung T7 mobile solid-state drive can not be affected by high temperature.
Encryption function: Easy to use
As the "younger brother" of Samsung T7 Touch mobile solid state drive, Samsung T7 although there is no fingerprint recognition of this enhanced protection measures, but with AES 256-bit hardware encryption protection measures can also bring users the best data protection experience.
Users who have used Samsung mobile solid state drives should be familiar with this security software, the design of the entire encryption software adheres to the principle of simple and practical, and the black design style caters to business people.
The Samsung T7 mobile SSD also comes with built-in upgraded software for PC and Mac, users can get the latest firmware updates, and you can even download mobile apps for Android smartphones and tablets.
Common AES 256-bit hardware encryption method, high security factor, users can set 4-16 bit passwords through the software, to meet the memory of different users for the password, after it is encrypted every time you insert the computer or other devices to read the decryption, and then with excellent shock resistance, It can protect the user's data security to the maximum extent in daily use. Of course, if you have special needs for security users can also choose T7 Touch, fingerprint + password unlock, compared with T7, the performance is the same, double security.
Summary of the PConline evaluation room
As the fourth generation of Samsung T series mobile solid state drive, Samsung T7 can be counted as a leader in the field of PSSD. It not only integrates ultra-light, ultra-thin, all metal and other advantages, measured close to the official 1050MB/s transmission speed, is about twice the previous generation of T5, although still can not be compared with their own X5 products, but enough to make many ordinary mobile hard disk is difficult to look back.
In terms of security protection, although compared with the "big brother" Samsung T7 Touch, Samsung T7 does not have the blessing of this protection measure of fingerprint recognition, it still has mature AES 256-bit hardware encryption protection and excellent anti-fall and anti-fall function, which can ensure a good security protection experience for users.
For those high-end business users who therefore pursue performance and portability, Samsung T7 mobile solid state drive is one of the best comprehensive performance products at present. Of course, if you want to pursue better data security protection, then choose the Samsung T7 Touch, although it is expensive, but considering the security of the data is still worth it.
Samsung T7 has a total of three colors (Mars red, Aurora blue, space gray) and three capacities (500GB/ 1TB/ 2TB), and has been officially launched on major e-commerce platforms.

Some customers want to know if the hard disk 500g is enough

Whether the 500G hard disk is enough mainly depends on your use needs. If you are just doing business, playing some small games, or editing some video footage shot by your phone, then the 500GB hard disk is perfectly sufficient. Systems, programs, and games take up about 100 gigabytes of space, which leaves about 370 gigabytes of space for you to use. 12

However, if you often clip a large number of videos, or the amount of footage is tens of gigabytes, or even hundreds of gigabytes (usually shot by the camera), then the 500GB hard disk may not be enough. In addition, if you have a lot of data to store, or like to play some big games, you may want to consider purchasing a larger capacity hard disk.

Overall, a 500GB hard disk is sufficient for most average users, but if your needs are larger, you may want to consider a larger hard disk capacity.

Seagate hard disk is a product of Seagate Corporation and is a representative work of Seagate.

Seagate Hard Disk Introduce

Seagate is the first company to bring to market technologies such as vertical recording, hardware-based full disk encryption, and hybrid hard disks that enable you to have a digital life - whether from your home, handheld device, car, or office.
Continually invest in the development of new technologies to improve performance, speed, and area density (the ability to store more data in less space).
As digital content, such as music, videos, photos, and games, has increasingly entered People's Daily lives, static data storage is becoming obsolete. In today's on-demand world, access, share and protect your digital content with dynamic storage solutions that give you the freedom to work, create and interact anytime, anywhere.

When the first hard disks started shipping in 1956, only big companies could afford the expense and space required for these one-ton behemoths. Today, digital storage is everywhere. Whether you realize it or not, you probably deal with digital storage devices every day. Every time you go to your bank ATM, record and play your favorite TV show on your DVR, or download a song to your portable media player, you are accessing or storing information from your hard disk. Every day, content passes through a variety of storage devices before reaching your office computer or personal media player. Today's hard disks are used not only for storing content, but also for transferring and creating content. With the rise of downloads and instant access, you'll find an infinite amount of content to download, enjoy and share, anytime, anywhere.
The market for digital storage is growing rapidly, spurred by an explosion of content created and used, as well as new legislation requiring companies to store certain records and information. Today's storage solutions not only ensure the security of valuable data, but also help you achieve flexible access to information and media according to your needs. Access and get content from wherever you are, whether in your car, on a business trip, or at the gym. From home entertainment consumer electronics devices to large enterprise data centers, Seagate's digital storage solutions enable you to get the most out of your content, whether for work or play.

As an industry expert for 30 years, Seagate continues to lead the storage industry in innovative solutions. No hard disk vendor today can match Seagate's broad range of solutions. With a wide range of products ranging from home computing to enterprise data centers, Seagate offers advanced solutions for every industry requiring digital storage. The company is an industry leader in research and development and is committed to introducing new technologies that meet the needs of future development. From the beginning, Seagate has continued to create breakthrough innovations to solve the challenges of digital storage solutions. Seagate was the first company to bring to market technologies such as vertical recording, hardware-based full disk encryption and hybrid hard disks that enable you to have a digital life - whether from your home, handheld device, car, or office - and is constantly investing in the development of new technologies to improve performance, speed, and area density (the ability to store more data in less space).

Consumer solutions

Today's on-demand world demands more computing performance, mobility, and reliability than ever before. Seagate offers award-winning products for desktops and high-end PCS, as well as laptops and mobile computing devices.
With the acquisition of Maxtor, Seagate also offers the broadest range of retail-branded storage solutions for small businesses, homes and home offices, including the FreeAgent, BlackArmor, Maxtor OneTouch and CentralAxis families. From portable and one-click backup portable hard disks to personal servers and network storage solutions, Seagate enables you to make the most of your corporate and personal content in the office, at home or on the go.
Seagate has always been at the center of the consumer electronics revolution. As a leading supplier of hard disks to the CE market, Seagate offers storage solutions specifically designed to meet the needs of many increasingly complex CE applications. Whether it's advanced game consoles, digital cameras, portable media players or automotive GPS systems, Seagate drives help CE manufacturers develop the next generation of devices for today's consumers.

Enterprise application

Enterprise-level applications are the backbone of the world's data storage. Today's companies require the ability to reliably store, manage, and protect large amounts of information. With a wide range of products optimized for rapidly growing enterprise applications, Seagate is a leader in providing innovative enterprise storage solutions. Seagate drives enable better, faster and more reliable cooling of business-critical storage systems, helping companies reduce costs and improve efficiency.

As an industry leader, Seagate is committed to providing technologies that improve company efficiency, such as platformization and vertical integration, to give companies a competitive advantage. Platformization helps Seagate provide a comprehensive product portfolio, allowing the company to apply one core technology platform to produce multiple products. Seagate applied the platformization concept to the manufacturing process, enabling Seagate to manufacture different specifications of hard disk products on the same production line, further improving efficiency, product quality and profit. Vertical integration technology has also played a huge role in simplifying the design and development process. Seagate designs, owns and manufactures all the core technologies needed to develop personal storage products, including magnetic heads, media, motors and printed circuit boards. The company does not rely on third parties to supply components and has full control over the entire development process and product roadmap, from component supply to technical improvement. As a result, product quality, profitability and time-to-market have improved dramatically, enabling Seagate to quickly meet customer requirements for quality, reliability and supply.

Seagate Technologies has been a leader in the storage industry for 30 years. Headquartered in Scotts Valley, California, Seagate employs more than 55,000 people worldwide who are dedicated to developing the company's next generation of storage products. From the original 5.25-inch hard disks for PCS to the development of vertical recording technology, the company pioneered new industry standards that greatly facilitated the advancement of the digital information age. Through technology leadership and innovation, Seagate continues to help individuals and companies maximize their use of digital content in an ever-evolving, on-demand world.

Seagate was founded in 1979 as a manufacturer of hard disks

In 1980 Seagate produced the industry's first 5.25-inch hard disk
In 1989, Seagate acquired Imprimis Technologies - High Capacity Hard Drives and Components
In November 1992, Seagate introduced the first 7200 RPM hard disk
In November 1992, Seagate introduced vibration sensing technology to the 2.5-inch hard disk and was the first to market
In May 1993, Seagate shipped its 50 millionth hard disk
In February 1996, Seagate merged with Conner Peripherals to form the world's largest independent storage equipment manufacturer
In October 1996, Seagate introduced the first 10,000 RPM hard disk, the Jaguar Series
Seagate introduced the first 7200 RPM Ultra ATA hard disk for desktop computers in October 1997
In October 1997, Seagate introduced the world's first Fibre Channel interface hard disk
In March 1998 Seagate produced 1 billion recording heads
In April 1999, Seagate shipped its 250 millionth hard disk
January 2000 DISHPlayer 500 integrated Seagate Hard drives - Seagate became the world's largest supplier of digital video recorders and user data storage
In February 2000, Seagate introduced the world's first 15,000 RPM hard disk, the Jaguar X15
In November 2000, Seagate introduced the world's largest hard disk, the Coolfish 180-gigabyte hard disk
The second generation Jaguar X15 was introduced in March 2001 - a year earlier than its competitors
In October 2001, Microsoft launched the Xbox with Seagate hard disks
In May 2002, Seagate introduced the Jaguar 15K.3 - its third-generation 15,000rpm hard disk - a year ahead of its competitors
August 2002 Seagate successfully introduced HAMR technology - HAMR is designed to increase the density of the storage surface by more than 100 times
In November 2002, Seagate demonstrated vertical recording technology, achieving a storage surface density of 100 billion gigabits per square inch
November 2002 Seagate delivers the industry's first Serial ATA hard disk, the Coolfish ATA V
December 2002 Seagate re-became a public company (NYSE:STX)
In June 2003, Seagate entered the notebook hard disk market with Momentus 2.5-inch hard disks
In February 2004, Seagate announced the industry's first 2.5-inch enterprise hard disk, the Savvio
In June 2004, Seagate introduced 12 new products - an industry first for a wide range of applications, such as MP3, DVR, consumer electronics, notebook computers, PCS, servers and enterprise data centers
In February 2005, PC World named the Seagate Barracuda 7200 the best hard disk
In March 2005 Seagate delivered 10 million 15K RPM hard disks
In May 2005, Seagate was awarded the Women's Employment Promotion Enterprise
June 2005 Seagate is at it again: introducing 10 pioneering and innovative hard disk products, including the first 2.5-inch hard disk with vertical recording technology and the first hard disk with full disk encryption to provide strong data security
In August 2005, VarBusiness magazine awarded Seagate the "Company of the Year" and "Best Product Innovation" awards
Mirra was acquired by Seagate in September 2005
January 2006 Seagate was named "2006 Company of the Year" by Forbes
The world's first 750G hard disk was introduced in April 2006
In May 2006, Seagate acquired Maxtor
In March 2007, Seagate introduced the world's first full disk encrypted hard disk for a laptop
In October 2007, Seagate shipped the world's first hybrid hard disk
In March 2007, Seagate acquired Evault
Seagate acquired MetaLINCS in March 2008
Seagate shipped one billion hard disks in April 2008
In July 2008, Seagate shipped the world's first 1.5TB hard disk
In March 2013, Seagate introduced its new generation of Seagate Backup Plus FAST high-speed portable hard disks. With a capacity of up to 4TB, it is the world's largest 2.5-inch portable hard disk.

Each manufacturer has its own set of rules, you can hardly remember so much, write commonly used good, such as Seagate hard disk "ST" after the first number is the first part of the appearance of the hard disk, Seagate hard disk shape code are 1, 3, 4, 5, 9 five. Among them, 1 represents a 3.5-inch full-height hard disk with a thickness of 41mm, and 3 represents a 3.5-inch half-height hard disk with a thickness of 25mm, which is also the most mainstream product at present. 4 indicates a 5.25-inch hard disk with a thickness of 82mm, 5 indicates a 3.5-inch hard disk with a thickness of 19mm, and 9 indicates a 2.5-inch half-height hard disk.

The second part of the number after "ST" is two to three digits, which represents the capacity of the hard disk, the unit is G, such as 160, indicating 160G, if it is only two digits, such as 80, it represents 80G.
The third part of the number after "ST" is a number, representing the capacity of the hard disk cache, 7200.11 in the hard disk, this 3 means 32M, 6 means 16M, 8 means 8M, but in other series, it is also useful to use the power of 2 to indicate the size of the cache, such as 3 is 2 to the power of 8M, 4 means 16M, 5 means 32M, 7200.12 series ST3500418AS is this representation, the cache is 16M;

The fourth part after the "ST" is two digits (in rare cases, three digits), and usually the first digit represents the number of hard disks. The second (or last two) digits are reserved.The last part of the model is A letter, usually one or two, representing the interface type of the hard disk, where "A" represents the interface of the ATA UDMA/33 or UDMA/66 IDE, and "AS"/" SV "represents the interface of the Serial ATA150/300. "AG" represents the interface of the ATA for notebook computers, "LW" represents the interface of the 68-pin Ultra-2 SCSI(LVD), and "LC" represents the interface of the 80-pin Ultra-2 SCSI(LVD).
With Seagate Coolfish 7200.10 160Gbytes ST3160215A, it means that Seagate Coolfish series 10 generation 7200rpm 160G hard disk, ST3160215A, ST means Seagate, 3 means it is a 3.5 inch half high hard disk, 160 represents 160G, and 2 represents the cache 2M. 15 means it uses A platter (160G), and A means it uses an ATA interface.

Western Digital Hard disks

The Western Digital hard disk (WD) is a hard disk manufactured by Western Digital Corporation. Western Digital Corp is the world's leading hard disk manufacturer. The company was founded in 1970 and began designing and producing hard disks in 1988. Headquartered in Lake Forest, California, USA, it is one of the oldest hard disk manufacturers and one of the founders of IDE interfaces. WD employs approximately 23,000 people worldwide.

Western digital company

The company has manufacturing facilities in Malaysia, California, and Thailand, design facilities in southern and northern California, and operations worldwide. After exiting the SCSI market in 1999, WD focused on the IDE segment, with sales of $1.015 billion in the second half of 2001 and a profit of $33 million. WD company is not good at publicity company, let people can remember the unique technology is few, in fact, WD's technical strength is not to be underestimated, its hard disk performance at a high level for a long time must have advanced technology support. Western Digital has long been committed to providing complete storage solutions for personal computer users around the world, and Western Digital has rich experience in serving users and organizations that collect, manage and use digital information. Western Digital's product line covers enterprise servers, desktop IDE hard disks, mobile storage applications and AV.

Hard disk brand

WD Raptor and WD Caviar Caviar are registered trademarks. WD Passport, WD Scorpio and WD Logo are Western Digital Technologies, Inc. The trademark of... All other brand and product names mentioned herein are the property of their respective companies.

Product classification

enterprise-class

【WD Raptor 】 SCSI interface for advanced workstation and server markets. It offers an average of 1.2 million hours of trouble-free time and a 5-year warranty.

Desktop level

(Desktop hard disk) : [WD Raptor X] 10 thousand RPM hard disk with SATA interface 150 GB, 1.5 Gb/s, 16 MB cache, 10,000 RPM. Five years warranty. Caviar(Caviar) series [WD Caviar SE16] run fast and quiet, low heat, with 16 MB cache, support NCQ, support hot swap, support 3G/s transmission rate, in line with REV.2.5 specifications. 【 WD Caviar GP】 (Green power) hard disks make desktop PCS and external storage devices run quieter and generate less heat. This device can save important power resources. 【WD Caviar SE】 The hard disk runs quietly, fast, low heat, equipped with 8MB cache, showing superior performance and reliability SATA interface to 2TB GB, 3Gb/SEC, 8MB cache, 7200 RPM. 【 WD Caviar 】 The Western Digital Caviar hard disk is the best choice for mainstream desktop personal computers with a maximum capacity of 2TBG.

Portable hard disk

WD Scorpio drives are characterized by high performance and low power consumption. The 5 400 RPM WD Scorpio is extremely fast but consumes very little power, extending system battery life and increasing long-term reliability. WD entered the mobile hard disk market in 2005.

Digital video

WD AV series drives are widely used in security audio products, including set-top boxes, DVD players and mainstream surveillance system equipment. Capacities range from 80GB to 720GB using EIDE and SATA interfaces.

Color classification

Blue represents mainstream hard disk products. The sense of stability conferred by BLUE represents the professionalism and reliability of Western Digital Blue. Caviar Blue(Western number Caviar) and Scorpio Blue(Scorpion to special) are the most commonly used series of 3.5-inch and 2.5-inch products, respectively. This series of hard disks can meet the harsh requirements of ordinary users for hard disk stability.
Blue disk 7200 RPM, all aspects are more balanced, the performance measured down and the black disk is similar, do system disk and store the game is good. 3 years guarantee. Common models are: WD1600AAJS, WD5000AAKS, WD10EALS, WD10EALX, WD3200BEVT, etc.
Green represents environmentally friendly hard disk products. Green represents the energy saving and environmental protection hard disk in the 3.5-inch WD Caviar series with its fresh and environmental protection meaning. WD Green Drives with WD GreenPower technology provide a quieter, environmentally friendly and low-power storage solution for energy-conscious consumers.
Green disk 5400 RPM, low noise and energy saving, the disadvantage is poor performance. It is suitable for making warehouse inventory of movies and materials. 3 years guarantee. Common models are: WD5000AADS, WD10EADS, WD10EADX, WD10EARS, WD10EVDS, etc.
Black represents the highest performance product. Black gives Western Digital hard disk the ultimate performance because of its professional top-level implication and speed sense. The rock-solid mechanical structure provides the perfect storage solution for professional enthusiasts and those looking for extreme performance.
Black disk 7200 RPM, the cache can be used to download disks and system disks, often read and write program files. 5 years guarantee. Common models: WD5001AALS, WD1001FALS, WD1002FAEX, WD2001FASS, WD3200BEKT, etc.
Red disk: The red disk is located in the home, small office NAS, with the ability to work 7×24. The power consumption and noise are comparable to the green disk, but the reliability and stability are far better than the green disk.
The latest release of purple disk: Purple disk is specifically for video surveillance applications, after a special monitoring compatibility test (including CCT certification), can 24×7 uninterrupted operation, the average time between failures of 1 million hours, suitable for home, SOHO, small and medium-sized enterprises. It supports up to eight hard disks in parallel, supports access to up to 32 high-definition cameras, annual write load of 60TB, and typical power consumption of 5.1W.

Hard disk number

Western Digital's IDE drives include the Caviar (Caviar) and Experl (Expert) series, though the latter has long since been discontinued. WD hard disks are basically divided into three categories: high-end BB series, mid-end AB series, low-end EB series, of which only BB series hard disks are 7200 RPM products. The number of Western digital hard disks usually consists of a main number and an additional number, but Western Digital does not disclose the specific meaning of the additional number to the retail market.
The numbering format of Western Digital varies according to the product series, and the numbering method is simple and clear, consisting of 12 numbers or letters. In the 12 numbers, the first 6 numbers are the main numbers, and the last 6 numbers are additional numbers. The main series of caviar in the desktop market is labeled as "manufacturer code + capacity + speed, cache + interface type".

Principal number part

WD - XXXX - X - X
The first part "WD" is short for "Western Digital" and refers to the products of Western Digital Corporation.
The second part usually consists of 3 or 4 digits, indicating the capacity, and is measured in 100M. The logo is the same as Seagate's, with the 4-bit "1200" representing 120GB and the 3-bit "800" representing 80GB
The letters in the third part indicate speed and cache capacity. A indicates a caviar hard disk whose rotational speed is 5400 RPM/ min. "B" indicates a caviar hard disk whose speed is 7200 RPM/ min. E indicates the Protege series hard disks whose rotational speed is 5400 RPM/ min. "J" represents a high-end caviar hard disk with a speed of 7200 RPM/ min and a data cache of 8MB. "G" represents the most high-end desktop hard disk Raptor series with a speed of 10,000 RPM/ min and a data cache of 8MB.
The fourth part describes the interface types. A- Ultra ATA66, B- Ultra ATA100, W represents the hard disk used in the AV (digital video and audio) field, D represents the Serial ATA150 interface.

Additional numbered part

- X - X - XX XX
The first part is the OEM customer identification, 00 is the retail market, and the rest is the OEM customer code. If it is other characters, it is the OEM customer code, different numbers correspond to different OEM customers, and this number is usually not for the retail market.
The first character in the second part indicates the capacity of a single disk. C indicates that the capacity of a single disk is 40GB, D indicates 66GB, and E indicates 83GB. Corresponding to the single disk capacity, CP--Protg series (commonly referred to as EB series) 40GB single disk capacity version, CB--Caviar5400 series (AB series) 40GB single disk capacity version, CA--Caviar7200 series (BB series) 40GB single disk capacity version, CR- Caviar SE 7200 series (i.e. JB series with 8MB cache) 40GB single-disk capacity version.
The last character in the second part indicates the version code of the same series of hard disks, which changes with different series. "A" stands for 7200 RPM, BB series with Ultra ATA100 interface; "B" stands for 5400 RPM, Ultra ATA66 interface AB series; "P" stands for 5400 RPM, EB series with Ultra ATA100 interface; "R" stands for 7200 RPM, Ultra ATA100 interface, JB series with 8MB cache. In the single disc 66GB and 83GB products, there are also other letters such as "U", "V", corresponding to JB series and BB series products respectively.
The fourth part is the Firmware version of the hard disk. We commonly have "F0", "A0" and so on.