Western Digital 12TB WD Blue Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD120EAGZ
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Availability:
Only 3 left in stock, order soon!
Arrives
Monday, Sep 7
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Capacity: 12TB
Style: 3.5"
Features
- Reliable everyday computing
- Western Digital quality and reliability
- Free Acronis True Image WD Edition cloning software
- Capacities up to 12TB
Description
WD Blue internal hard drives deliver solid reliability for office and web applications and are perfect for extra storage for desktop PCs and in-office applications.
Digital Storage Capacity: 12 TB
Hard Disk Interface: Serial ATA-600
Connectivity Technology: SATA
Brand: Western Digital
Special Feature: Acronis True Image, NoTouch Ramp Load Technology
Hard Disk Form Factor: 3.5 inches
Hard Disk Description: Mechanical Hard Disk
Compatible Devices: Desktop, Laptop
Installation Type: Internal Hard Drive
Color: Blue
Digital Storage Capacity: 12 TB
Hard Disk Interface: Serial ATA-600
Connectivity Technology: SATA
Additional Features: Acronis True Image, NoTouch Ramp Load Technology
Hard Disk Form Factor: 3.5 inches
Compatible Devices: Desktop, Laptop
Hard Disk Rotational Speed: 7200 rpm
Specific Uses For Product: Business, Personal
Cache Memory Installed Size: 512
Data Transfer Rate: 512 megabytes_per_second
Form Factor: 3.5-inch
Hardware Connectivity: SATA 6.0 Gb/s
Hardware Platform: PC
Hard-Drive Size: 12 TB
Item Weight: 1.7 pounds
Item Dimensions L x W x Thickness: 5.9"L x 4.2"W x 1"Th
Number of Items: 1
Brand: Western Digital
Model Number: WD120EAGZ-SPCRJB0
Hard Disk Description: Mechanical Hard Disk
Built-In Media: Hard Drive
Model Name: WD Blue
Manufacturer: Western Digital, Inc.
UPC: 718037907888
Mfr Part Number: WD120EAGZ-SPCRJB0
Warranty Description: 2 year limited warranty
Installation Type: Internal Hard Drive
Color: Blue
Enclosure Material: Aluminum
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Sep 7
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View our full returns policy here.
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View our full returns policy here.
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Top Amazon Reviews
Capacity: 1TB
Style: 3.5"
I gave this drive to someone as a gift, and they've been using it for backups for 10 months without issue. My review is based on another unit of this drive which I bought for myself some months later. I've been using it as my primary desktop OS/programs drive since 5/29/2014, so it's about 5 months now. There have been no problems thus far. It's really quite a bargain for desktop use if 1TB is all you need. The actual capacity of this drive is 931.5GB. That's an old marketing trick which can be blamed for the pointless redefinition of all our real, long established data measurements with those silly "i" characters. I won't dwell on it any further, but 931GB is the true capacity when measured in base 2, as all data is correctly measured. This 1TB Blue drive uses a single 1TB platter spinning at 7200rpm. There are 2 heads (each side is 500GB). A single platter design is usually better for reliability than having multiple smaller platters, because there are fewer points of failure, the assembly is lighter, the motor doesn't have to work as hard, and less heat is generated. Single platter drives will also tend to be quieter, but due to my configuration I can't judge the noise level. There has been much discussion and testing among users in online forums, including WD's forum, which repeatedly show that the 1TB Blue and 1TB Black perform the same. It appears the only benefit of the 1TB Black is a longer warranty. Some Blacks are faster than this drive, but the 1TB model is not. Compared to a Green, the Blue is faster owing to it's faster rotation speed. The Green drives also have an "intellipark" feature which causes them to keep parking the heads after a few seconds of inactivity. This can cause laggy response and extra wear. I dislike that design - I believe power management functions should be left under the control of the operating system, which can account for user preferences and what is happening in the rest of the system. Hardcoding this behavior into the drive is ridiculous, in my opinion. The Blue behaves the way I prefer - it does not use "intellipark", it stays ready to roll until directed otherwise through power management commands from the OS. I wish they were making the Blue series in larger sizes - it seems this 1TB is the end of the line. I don't care for the Greens and the Blacks are more expensive. Partition/Sector Alignment -------------------------------- Please be aware that like most modern drives, this drive uses 4KB sectors (also known as "advanced format"). If you are using Windows 2003, Windows XP or older, as I am, don't let Windows handle the partitioning of this drive. This is even an issue on unpatched versions of Vista and Windows 7. These older versions of Windows will believe that the physical sectors are 512 bytes, when in reality they are 4KB. As a result, the partition(s) will not be aligned with the physical sectors. It will still work, but performance will be reduced. Windows Server 2003 and Windows XP and older do not have any update to fix this, but it's not a problem as long as you do the partitioning with a suitable 3rd party utility. I think Western Digital offers a tool for this, but I've never tried it. Once the partitions are set, it's fine to let Windows format them. For my Windows XP install, I used a recent version of GParted to partition the drive. GParted can be downloaded and burned to a bootable CD, or installed to a USB flash drive. Just use the option to align your partition(s) on 1MB boundaries. This is the easy way to ensure they are aligned correctly for the best performance. Then boot your WinXP install disc and let it format the partition that you already created. It sounds harder than it is, it's a minor hassle but it's simple. If you ever change the partitions, once again use GParted or a similar utility that handles alignment for modern hard disks. Don't use the built-in XP partitioning. But again, once the partitions are created, it's fine to let Windows format them. The built-in partitioning is fixed in Windows 8. According to Microsoft, it is fixed in Windows 7 after installing Service Pack 1 - you would need to have that service pack before partitioning the drive, not after. Again according to Microsoft, it is also fixed in Windows Vista *after* installing update MS KB 2553708 - I assume this is automatically installed for people who use automatic updates, but I don't know that for a fact. This won't do you any good if you're doing a fresh install and your install disc predates the required update. The partition alignment detail I've described above is an issue you will encounter with any recent hard drive, it's not unique to this model. If you ignore it, performance will be affected but it will still work. You may see Seagate drives implying that they are immune from this, but in reality, they are not. All modern "advanced format" drives, of any brand, will perform better if sectors are properly aligned. But it's not a big deal - just use a modern partitioning utility and then you're set. ---------------------- I just tested this drive using "Roadkil's Disk Speed" on Windows XP 32-bit. I'll cut out all the variables and just give the linear transfer results with large block sizes. My drive has a few partitions and there are lots of files on it, so this might affect results. First partition (first 20GB): 170-178MB/sec linear read 3rd partition (physical location range is from 28-628GB): 153-177MB/sec linear read Last 300GB is unpartitioned so I can't test that range. I don't think the random access test is useful, because my partitioning greatly influences the result. There's a test mode for the whole physical disk, but it's results are too inconsistent. This drive is a great bargain if you just need a simple, inexpensive, well performing 7200rpm hard disk. I was tempted to try a Seagate SSHD, but I couldn't justify the cost compared to this. If I was shopping today, I'd look carefully at the HGST and Toshiba offerings as well, but from the WD side this is my pick for a general purpose 1TB desktop drive. Update: It is now 11/2015. This drive is in my desktop PC, used daily, and still works fine. Some months ago I ran a benchmark on this drive using the linux utility "gnome-disks". The random access performance measured out to a 15.7ms average. This is mediocre, but expected from a quiet drive. Screenshot is attached. It also shows the transfer rate across the disk (read test only, I didn't test writes).
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Reviewed in the United States on October 27, 2014 by m6502
Capacity: 1TB
Style: 3.5"
I bought this product as a replacement driver for my UGreen NAS. The drive came quickly and was packaged properly. The drive itself was not too expensive and it worked great. I was able to install it into my NAS and I was up and running quickly. This seller was great and Western Digital made a solid HDD.
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Reviewed in the United States on July 27, 2026 by Amazon Customer
Capacity: 2TB
Style: 3.5"
Huge Storage Upgrade Over Stock Coming from the tiny original Xbox drive, jumping to 2TB felt massive. I finally had room for everything without constantly worrying about space. Worked Well with the Xbox Mod Setup After setting everything up (adapter, formatting, etc.), the drive worked reliably. No weird behavior, no random issues—it just ran. That’s exactly what I wanted for a console mod like this. Good Balance of Speed and Reliability At 7200 RPM with a decent cache, it’s not cutting-edge by modern SSD standards, but for what I’m using it for, it’s more than fast enough. Load times felt solid, and data transfers didn’t feel sluggish. Quiet and Cool Enough for Long Use One thing I paid attention to was heat inside the Xbox. This drive runs reasonably cool and quiet, which matters in a closed console environment. Also Great Outside of Console Mods Even beyond the Xbox, this type of drive works well for: General desktop storage Media libraries Backup drives Homelab setups
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Reviewed in the United States on May 5, 2026 by James C.
Capacity: 1TB
Style: 3.5"
Bought this a few years ago and its still going, so the reliability is great, Boot speed is a bit lack luster and connectivity is ok. This is your standard size HDD so its not small. If you are looking for something basic with a bit of space this is a good drive and will get the job done with little issue.
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Reviewed in the United States on July 25, 2026 by Samuel Stevens
Capacity: 1TB
Style: 3.5"
[ SEE UPDATE BELOW ] SUMMARY: (i) good performance as an external USB drive; (ii) internal temperature reaches the 95-105F range after several hours of use. REVIEW There are more than enough reviews of this disk as an internal drive. My interest, however, was to use it as an _external USB drive_, and that is what this review focuses on. The 3.5" WD Blue 1TB hard disk drive (WDC WD10EZEX-08WN4A0), has attractive properties for storage purposes: a formatted capacity of ~954 GiB out of its nominal 976 GiB --usually described by manufacturers as 1000 GB--, a 7200 rpm rotation rate, a 64 MB cache, a SATA III interface with a 6GB/s speed, and S.M.A.R.T. monitoring. It is not the top of the line of Western Digital SATAs, at least in terms of the length of their limited warranty (3 years for the WD Blue versus 5 years for the Black, although there are claims of not too different benchmarks), but because of its relatively low price it has a 'drive value' index similar to the top non-SSDs. This makes the WD Blue 1TB a good choice as an external USB drive for the storage of media or data, in particular incremental backups (especially when disk writes caching is enabled), since top performance values are unrealistic for serving as a guide for external USB devices, where performance is primarily dictated by the USB specs and manufacturing compliance. The figure below shows results of a free benchmark app in wide use, Crystal DiskMark, for the Blue 1TB used as an external USB-3 storage drive (left table) and --to provide some perspective to these values-- for an internal SSD with a good performance as a system drive (right table) -- the latter, which was partitioned into two logical drives, has a capacity of 512 GB, and both devices are quite comparable in the fraction of used capacity, ca. 40%, which is important since performance declines as a drive gets full. The first line in both tables are the averages of sequential 5 reads and 5 writes with multiple queues and threads for a relatively large data block; this measures how quickly large files (e.g., backups or multimedia) can be read from or written to the drive. The second line are the averages of random 5 reads and 5 writes with multiple queues and threads for a small block; this measures how quickly many small files (e.g., when copying large app folders or loading programs during operating system startup) can be read from or written to the drive. The third and fourth lines mirror the above two but using only a single queue and thread. The lower performance of the Blue 1TB is only due in part to USB transfer issues; published data indicate that, if used as an internal drive, the values in the left table would have increased by less than two fold. Nevertheless, its performance is quite appropriate for external storage. I mounted the WD Blue 1TB vertically in a dual-bay USB3 docking station, and it is typically quiet but for some clicks when it starts spinning. A negative finding is its temperature after many hours of use: compared with a 2.5" WD Blue 500GB disk that warms up to about 24C (75F) in the second bay of the open docking station, the Blue 1TB gets hotter in the range of 35-40C. Temperature is often claimed to affect drive reliability (but see "Failure Trends in a Large Disk Drive Population" by Pinheiro and co-workers, 2007), so I put close to the station a small USB fan with an adjustable speed set to a low value to keep it quiet, which brings the Blue 1TB temperature back to the below-30C range. UPDATE June 2017 Used in a new Lenovo E560 has worked extremely well over the last 6 months. The only issue has been that Windows (7SP1 Pro 64x) failed to recognized the drive as ready in 2 or 3 occasions only, and offered to format it; so far, this has been solved simply by rebooting the laptop. (This is a known but rare quirk of the OS, usually --but not always-- fixed by running the command sfc/scannow as an administrator in the DOS box.)
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Reviewed in the United States on December 9, 2016 by Abbe
Capacity: 1TB
Style: 3.5"
They were sealed in their package and new. Being WD I'm sure they'll be great otherwise. These are for replacement system drives as I always keep the operating system on one drive and have a seperate storage drive for everything we want to keep long term. That helps protect important data better. If a drive is going to go down, most usually it is the one that is working all the time....the system drive. If you just back that up every so often and don't store important stuff there, it's a hassle but not a total catastrophe. I just had to hijack a spare out of my system for my son's computer as his system drive finally went south. So now I have these as the ones we are working on now have alot of age on them- and when they throw a snit fit...no problem...we'll just throw the backups on these and we'll be back running again. I always implicity trust Western Digital for solid, durable hard drives....all the time. All my really important drives here are, in fact, WD drives. Stability and quality matters when you're talking about info you want to keep a lifetime.
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Reviewed in the United States on December 13, 2025 by Amazon Customer
Capacity: 6TB
Style: 3.5"
Drive works fine as expected from WD.
Reviewed in the United States on July 4, 2026 by Cloud
Capacity: 12TB
Style: 3.5"
I bought a new computer. As a photographer, I have several terabytes of images. The computer had an SSD but that would not hold the images. My old computer had the photos spread over several drives. This allows me to consolidate the photos on a single drive.
Reviewed in the United States on June 29, 2026 by Dan Perry