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  • Your Rescue Plan documents will be delivered to you via email only to the address associated with your Amazon.com account and can be found in your account message center within the Buyer/Seller Messages.
  • If your drive stops working, the Rescue data recovery plan will recover the data from the failed drive and return it to you on a new piece of external storage
  • Covers new single-disk bare (internal) drives of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction). Not eligible on enterprise class or multi-drive devices
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  • If your drive stops working, the Seagate Rescue data recovery plan will recover the data from the failed drive and return it to you on a new piece of external storage
  • Covers new single-disk bare (internal) drives of any brand when purchased within 30 days (receipt must be retained for purchases not on the same transaction). Not eligible on enterprise class or multi-drive devices
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WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FAEX

4.4 4.4 out of 5 stars 2,503 ratings
$209.99 with 7 percent savings
Typical price: $225.99
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Capacity: 4 TB
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Purchase options and add-ons

Digital Storage Capacity 4 TB
Hard Disk Interface Serial ATA-600
Connectivity Technology SATA
Brand Western Digital
Special Feature Portable
Hard Disk Form Factor 3.5 Inches
Hard Disk Description Mechanical Hard Disk
Compatible Devices Desktop
Installation Type Internal Hard Drive
Color Black

About this item

  • WD Black high performance 3.5-Inch SATA hard drives combine 7200 RPM spin speed, 64 MB cache, and SATA 6 Gb/s interface for the ultimate in power computing.
  • High performance electronics architecture features dual processors and bigger, faster caches for maximum read and write speeds.
  • StableTrac The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking, during read and write operations.
  • 4 TB capacity holds up to 800,000 digital photos, 1,000,000 MP3 files, and 300 hours of HD video.
  • 5 year limited warranty.
  • Microsoft operating systems prior to Vista, 32-bit operating systems, and Mac systems prior to OSX 10.4 may not support volumes greater than 2TB. To recognize the full capacity of this drive, you may need multiple partitions. Check with the manufacturer to verify your system’s compatibility.
› See more product details

There is a newer model of this item:

WD 4 TB 3.5" Performance Hard Drive 128 MB Cache, 3.5" Internal Bare or OEM Drives, Black (WD4004FZWX)
WD 4 TB 3.5" Performance Hard Drive 128 MB Cache, 3.5" Internal Bare or OEM Drives, Black (WD4004FZWX)
$149.00
(370)
Usually ships within 5 to 6 days

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WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FAEX
This item: WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch - WD4001FAEX
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SAMSUNG 870 EVO SATA III SSD 1TB 2.5” Internal Solid State Drive, Upgrade PC or Laptop Memory and Storage for IT Pros, Creato
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BENFEI SATA Cable III, 3 Pack SATA Cable III 6Gbps Straight HDD SDD Data Cable with Locking Latch 18 Inch Compatible for SATA
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Price-7% $209.99
Typical: $225.99		$67.99$71.99-22% $93.47
List: $119.99		$99.00-24% $220.90
New Price: $289.99
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Customer Ratings
4.44.4 out of 5 stars2,503
4.64.6 out of 5 stars56,178
4.34.3 out of 5 stars19
4.44.4 out of 5 stars5,410
4.54.5 out of 5 stars983
5.05.0 out of 5 stars1
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Product Description

WD Black Desktop Hard Drives – Maximum performance for power computing.
Maximum performance.
Sophisticated performance enhancing features deliver the speed you need for demanding applications like photo and video editing and Internet gaming. No compromises.
High performance, high capacity, high reliability, and cutting-edge technology make up WD Black, the ideal drive for those who demand only the best. High capacity.
State-of-the-art technology delivers a balance of high performance and high capacity perfect for data-intensive workloads that require large amounts of storage such as video editing, 3D rendering and scientific modeling.
Product Features

High-performance electronics - WD Black drives feature a dual processor and bigger, faster dynamic cache for maximum read and write speeds.

Dual processor - Twice the processing power to maximize performance.

Dynamic Cache - WD's dynamic caching algorithm improves performance in real time by optimizing cache allocation between reads and writes. For example, if there's an overwhelming percentage of read traffic as opposed to write traffic, the drive automatically allocates more cache for read data, which reduces congestion and improves overall drive performance.

Rock-solid mechanical architecture - Enhanced reliability features help protect the drive and the data stored on it.

NoTouch Ramp Load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.

StableTrac - The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations which enables consistently higher performance. (2 TB and 1.5 TB models only)

Tested for compatibility - We perform tests on hundreds of systems and a multitude of platforms in our FIT Lab to give our customers confidence that our drives will work in their systems.

The WD advantage - WD puts our products through extensive Functional Integrity Testing (F.I.T.) prior to any product launch. On average, each new product goes through 600,000 hours of testing. WD also has a detailed Knowledge Base with more than 1,000 helpful articles. You can also call toll-free support 7 days per week in the U.S. and Canada. See the WD Support site for full details.

Upgrading your drive is easy - WD Acronis TrueImage, available as a free download on the WD Support site, enables you to copy all your data to a new drive so you don't have to reinstall your operating system to get all the benefits of a new drive.

WD-certified packaging - All WD drives purchased from Amazon.com are shipped in WD-certified hard drive packaging. It is designed and fully tested to provide WD products with the highest of safety while in transit. With WD-certified packaging, you can rest assured that your WD hard drive will arrive safely, fully protected, in a non-descript, easy-open package.

Compatibility
Works with Windows 7/Vista/XP/2000, Mac and Linux operating systems.

Recommended use - WD Black hard drives are tested and recommended for use in PCs, high-performance workstations and notebook computers.*

*Business critical RAID environments – Please consider WD Red NAS Hard Drives for all multi-bay consumer NAS environments with 1-5 bay chassis. For business critical RAID applications, please consider WD's enterprise hard drives that are specifically designed with RAID-specific, time-limited error recovery (TLER), are tested extensively in 24x7 RAID applications, and include features like enhanced RAFF technology and thermal extended burn-in testing. WD Black hard drives are not recommended for and are not warranted for use in RAID environments utilizing Enterprise HBAs and/or expanders and in multi-bay chassis, as they are not designed for, nor tested in, these specific types of RAID applications.

Ideal for:
  • Power computing applications such as intensive photo or video editing
  • Maxed out gaming systems
  • Adding lots of storage in desktop PCs
  • Adding extra storage space for photos, videos and music

Features at a glance

  • Industry-leading performance
  • 500 GB - 4 TB capacity
  • SATA 6 Gb/s interface
  • 7200 RPM
  • Dual processor technology

You might also consider:


3.5-inch Internal
Comparison Chart
WD Blue
WD Green
WD Black
WD Red
WD VelociRaptor Solid performance
and reliability for everyday computing. Cool, quiet operation
for efficient eco-conscious computing. Maximum performance
for power computing. The right drive for home
or small office NAS. High-performance storage for power users. Ideal for Family and business computing. Desktop PCs, secondary storage and external drives. Photo and video editing, and maxed out gaming systems. Specifically designed and tested for small office and home office, 1-5 bay NAS systems. Performance enthusiast systems and workstations. Capacity range 80 GB – 1 TB 320 GB – 3 TB 500 GB – 4 TB 1 TB – 3 TB 250 GB – 1 TB Interface SATA 6 Gb/s
PATA 100 MB/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s SATA 6 Gb/s Form factor 3.5-inch 3.5-inch 3.5-inch 3.5-inch 3.5-inch Cache 8 MB – 64 MB 64 MB 32 MB – 64 MB 64 MB 64 MB Limited warranty 2-year 2-year 5-year 3-year 5-year Highest capacity Highest performance Photo/video editing Network Storage Systems

Product information

Technical Details

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Additional Information

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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Customer reviews

4.4 out of 5 stars
2,503 global ratings

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Customers say

Customers are satisfied with the computer drive's functionality, speed, and quality. They mention it works well with their computers, has quick access times, and starts up right away without issue. Many are pleased with its value for money, storage capacity, and ease of installation. However, opinions differ on the noise level.

AI-generated from the text of customer reviews

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FunctionalitySpeedReliabilityHard drive qualityValue for moneyStorage capacityEase of installationNoise level
531 customers mention "Functionality"511 positive20 negative

Customers are satisfied with the hard drive's performance. They say it works well with their computers and has no problems. The original OEM drive was working well, but they wanted a backup drive on the shelf that had. They are thrilled with the results and ease of this upgrade. The drive provides plenty of space, is fast, and quiet.

"...The bottom line is... the WD Black drives have great performance, features, and are among the most reliable of the consumer drives with a marginal..." Read more

"...(I build and upgrade the work PC computers) and they have performed reliably for me. Your results may vary...." Read more

"...When all is said and done, I am thrilled with the results and the ease of this upgrade." Read more

"...PERFORMANCE. This drive replaced my OEM drive Hitachi HDT721010SLA, which is also a 7200 rpm drive...." Read more

497 customers mention "Speed"440 positive57 negative

Customers appreciate the computer drive's speed. They say it runs smoothly, eliminates lag issues, and has a quick access time. The full reboot takes less than a minute, and the drive starts up right away without issue.

"...For the WD Black the performance is very high with fast access times, fast spin rate, high data-throughput, twin processors, and large cache... it's..." Read more

"...You should explore this new HD technology ASAP. SSDs are so much faster than mechanical drives, you won't believe the performance increase...." Read more

"...with HD Tune Pro, has increased from 179.5 MB/s to 195.1 MB/s. Quick access time is likely the reason why WD recommends this drive for photo/video..." Read more

"...they came from Amazon well packaged and protected, and started up right away without issue...." Read more

356 customers mention "Reliability"315 positive41 negative

Customers appreciate the drive's reliability. They say it's well-made, stable, and easy to set up. The hardware is outstanding, and the extra quality features are worth it for their peace of mind. Some customers have used the drive for 13 years without issues.

"...have great performance, features, and are among the most reliable of the consumer drives with a marginal cost premium." Read more

"...mechanical HD products exclusively for the last few years for their reliability...." Read more

"...While not failure proof, this drive is the most reliable from the most common 2TB high performance drives...." Read more

"...Free from WD. 5: This WD "Black" drive is one of the very best made: why I stress this is that I would rather pay $10 more for this very high..." Read more

352 customers mention "Hard drive quality"352 positive0 negative

Customers are satisfied with the hard drive's performance. They find it quiet and well-ventilated, making it a good boot drive. The 1TB capacity allows for fast throughput even under load. Many customers consider it a great second drive and say it has no issues.

"...is very high with fast access times, fast spin rate, high data-throughput, twin processors, and large cache... it's one well tricked out drive...." Read more

"There are several things to know about this excellent drive and about Western Digital too:..." Read more

"...They serve to store backups of our other PC data, store music and movies, and to centralize photo storage for the thousands of images we accumulate..." Read more

"...Sobre el disco duro es una pieza perfecta, es el disco duro mas silencioso que he usado...." Read more

289 customers mention "Value for money"267 positive22 negative

Customers appreciate the value for money of the computer drive. They say it's a great low-cost drive and a good buy for tech enthusiasts. The 4TB model feels awesome.

"...and are among the most reliable of the consumer drives with a marginal cost premium." Read more

"...Black product line of WD HDs have a 5-year warranty, and are very reasonably priced when compared to WD's entry level product...." Read more

"...For the price, I think they are a bargain. they came from Amazon well packaged and protected, and started up right away without issue...." Read more

"...Anyway, the price on this HD was right and I have had many WDs before and have always had good luck with them...." Read more

182 customers mention "Storage capacity"173 positive9 negative

Customers appreciate the storage capacity of the computer drive. They say it has a large cache size of 64MB, which increases the virtual speed of the drive. The drive boots quickly, stores music and movies, and centralizes photo storage. Copying large files from their SSD to the HD ranges from 213MB/s to 100MB/s depending on what.

"...times, fast spin rate, high data-throughput, twin processors, and large cache... it's one well tricked out drive. Reliability..." Read more

"...Connecting this 1 TB drive has increased storage capacity dramatically...." Read more

"...They serve to store backups of our other PC data, store music and movies, and to centralize photo storage for the thousands of images we accumulate..." Read more

"...I really didn't expect to see, but I really like having that extra space to expand and not having to worry about how much disk space a game or app..." Read more

177 customers mention "Ease of installation"161 positive16 negative

Customers find the computer drive easy to install. They mention it's fast, quiet, and there are no issues with Windows 7 installation. The drive can be installed using RAID or IDE if desired, and Windows 7 boots without any problems.

"...all is said and done, I am thrilled with the results and the ease of this upgrade." Read more

"...and install a hard drive or video card, you can do all of this quickly and easily. ENJOY!" Read more

"...Windows 7 vuela en él, sin problemas, sin reiniciar, sin malas funciones. Le doy 5 estrellas en voto..." Read more

"...I had an easy install with the major thing being the slight scare when the BIOS, at first, didn't seem to see the new drives...." Read more

389 customers mention "Noise level"217 positive172 negative

Customers have different views on the computer drive's noise level. Some find it relatively quiet and easy to install, while others describe it as louder than expected.

"...The noise from the drives has never been an issue, and we've never had to increase the volume to be able to hear even the softest sounds from movies..." Read more

"...with my DirecTV receiver is slightly, but only slightly, louder than an electric wall clock...." Read more

"...Sobre el disco duro es una pieza perfecta, es el disco duro mas silencioso que he usado...." Read more

"...I am happy to say that my drive is virtually silent. I am sitting 2 feet from my machine and I would not hesitate at all to install it in a library...." Read more

WD 1TB 64MB Drive Great until it Failed 6 weeks later
3 out of 5 stars
WD 1TB 64MB Drive Great until it Failed 6 weeks later
I bought this drive to store pictures, music and files on as replacement for an older WD drive that failed. I went with the Black series for it's speed and reliability. Amazon's packaging was fine (see pics that I added to product above) and installation, initialization and formatting went without a hitch. The drive performed very well; was fast and pretty quiet (especialy compared to the OEM WD Blue drive in my PC). I did notice that the drive would get rather warm when I still had the computer case open but, I have three fans spinning in there so didn't think much of it. Six weeks later, I received a "drive not accessible" error and after running the WD Data LifeGuard diagnostics, determined that the drive had multiple bad sectors and failed the SMART test. I tried to recover the sectors but, it wouldn't work. A call to WD tech support confirmed that it was toast and they sent me out a replacement. The interesting part was that the replacement was shipped in nothing more than a small corrugate box with just the drive and the plastic end caps inside. The new drive has been in for two days now and so far it's OK. I gave this 3 stars for failing after 6 weeks but, still think it's a good drive for the money and believe that I had some bad luck. If I write back in 6 weeks with another failed drive, I wont be so charitable.
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Top reviews from the United States

  • Dave L
    5.0 out of 5 stars Possibly the best drive for consumers.
    Reviewed in the United States on May 11, 2013
    Capacity: 2 TBVerified Purchase
    This is my fifth WD Black hard drive I've bought, the first of the second generation 2TB drives. Overall I am very impressed at the performance and reliability. Fair prices too. I've used them as desktop drives, in arrays, and because they have SMART I've avoided loosing data or down time due to a critical failure.

    Performance
    The WD Black are at the upper end of the consumer drives, focusing on performance and reliability, at a higher cost. For the WD Black the performance is very high with fast access times, fast spin rate, high data-throughput, twin processors, and large cache... it's one well tricked out drive.

    Reliability
    Yes, less reliable drives are cheaper but you'll probably be buying a shorter life and be gambling on a critical failure catching you unawares. The WD Black drives are pretty close to being a sure thing because they are more reliable, more predictable, and have a long 5 year warranty.

    SMART Feature
    All drives have a lifespan and this is where WD SMART technology comes to your rescue. The built in SMART feature monitors and logs what the drive has to cope with - Yes, even reliable drives are prone to slip ups and we never know about it because they cope. Reading the SMART log helps predict the eventual failure and give user time to backup and prevent a critical failure, and means you can get failing drives out earlier making it more likely you can catch a drive while it's still under warranty.

    RE: Reviews of Pesky DOA Drives
    Reading consumer drive reviews you'll find about 2.5% to 5% of drives failing within the first 6 months. Heartbreaking when it happens for sure, but it's not bad considering shipping, installation, and application are all out of the manufacturers control for such a sensitive and complex part. There can be any of the handful of reasons for this rate of near-DOA drives but it's just a sad fact of buying drives today. There are ways to combat this happening to you. If they weren't shipped to you in accordance with the manufacturers guidelines (they'll list it on their website) don't accept them. Check the intended application, such as desktop, RAID, temperature ranges, etc. (no point in putting a drive in to fail) and if you'll be using it in a raid controller, NAS, or external case check the drive's compatibility with the respective manufacturer. WD or not, if there is a some sort of a SMART feature you can run a full test on each new drive you buy, to weed out any dud drives, before putting them in service.

    Don't worry if all that was Greek to you. The bottom line is... the WD Black drives have great performance, features, and are among the most reliable of the consumer drives with a marginal cost premium.
    One person found this helpful
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  • xxx
    5.0 out of 5 stars One of Your Best Mechanical Harddrive Choices!
    Reviewed in the United States on December 1, 2012
    Capacity: 1 TBVerified Purchase
    I purchased this harddrive to replace a suspect failing (Hitachi/IBM) harddrive of similar size used for file backup purposes. This was my first purchase of computer hardware components from Amazon. The WD Caviar Black HD was ordered from Amazon early Thursday afternoon and was delivered the following afternoon by UPS with no problems or complications. I paid around $20 extra for next day delivery, but the HD was around $10 cheaper than my usual "egg" source (those in the 'know' know who I am referring to). The HD was well packaged, wrapped in anti-static plastic and suspended by end caps within a sturdy box. Much better packaging than my usual online "egg" source for computer hardware. The HD installed immediately, with no complication or problems. I have purchased WD mechanical HD products exclusively for the last few years for their reliability. The Caviar Black product line of WD HDs have a 5-year warranty, and are very reasonably priced when compared to WD's entry level product. I recommend you spend the extra $10-$30 for the Caviar Black high performance line for the 5-year warranty alone. You should not go wrong with this choice. HOWEVER......

    The WD HD model I purchased was an OEM version and I knew what I was getting. For those in the know, this is no problem. But for those who are new to desktop computer hardware or upgrades, OEM means something important! You new guys pay close attention! The directions below are for adding or replacing a secondary hard drive, NOT your primary boot drive. [If you are new to computer guts and are replacing your boot drive, I highly recommend doing some research first! And backup your data! Or you will be sorry! VERY sorry!]

    *OEM harddrives ship with NO instructions, NO software, NO cables, NO screws, etc. Just the harddrive in an anti-static bag. If you are not prepared for this, I recommend you purchase a 'retail' version of the harddrive for a few dollars more and you will receive all of the above :). You can also find instructions on Western Digital's support website. Worth a visit. Download the FREE diagnostic software too! You never know....
    * When you shut down your computer, mount the OEM harddrive in your computer harddrive bay (as a second harddrive in my case), connect the power cable and serial data cable, and reboot the computer, something unexpected may happen. Your brand new WD HD will not show up on your computer! Do not panic. This is normal :)
    * After rebooting your computer, you will need to 'initialize' your new harddrive and perform a 'quick format' on the drive. This should be a relatively simple procedure but can be daunting for the uninitiated (no pun intended). New guys have a good reason to be nervous. You don't want to click stuff randomly during this process since you can really mess up your computer!
    * For Windows 7, go to Control Panel, System and Security, Administrative Tools, Create and Format Hard Drive Partitions, and then Disk Management. You should see your primary boot drive, all other HDs on your computer, and your brand new WD HD should also be listed. If you see your new WD HD, you did good hooking it up. If you don't see your new hard drive and/or your boot drive, stop and find help. Something is wrong. (Don't screw with your boot drive or other drives, or you'll be sorry! Again, do NOT mess with your boot drive!) Right-click on your new WD HD and you should be asked to create a simple volume partition. Select this option and within seconds this should be completed. I generally select a single partition for the maximum partition size at first (you can always create additional partitions later). Afterwards, select 'quick format' and seconds later, this task should be completed. Back out all the way out, go to 'Computer' on your Start button and the new WD HD should be present. During the initialization/quick format procedure you should also have been given the opportunity to enter a name for your new WD HD. I simply used "WD Black Caviar 1 TB". You may call it whatever you wish! You can also rename your new HD later by clicking Start, Computer, select your new drive, right click, and select rename and enter a new drive name. With a single partition, the new WD HD should appear with over 900 MB of disk space and with no files stored. Go ahead and start transferring your data to the new drive, checking periodically to confirm data is being transferred as you intended. VOILA! You're done!

    I have used WD HDs for the last few years at home and at work (I build and upgrade the work PC computers) and they have performed reliably for me. Your results may vary. The 5-year warranty is a very good selling point for me. Although I have not had a warranty return with WD, knowing the 5-year warranty is present gives me some comfort. Five years goes by quickly, guys!

    Just a note, I personally use SSD hard drives (in a RAID 0 array) for my primary boot harddrive. SSDs are a bit new (and hence somewhat tricky for the new guys) and take a bit getting used to, but I HIGHLY recommend SSDs for your primary boot drive. You should explore this new HD technology ASAP. SSDs are so much faster than mechanical drives, you won't believe the performance increase. After a little research, I suggest your first SSD purchase be a retail package with included data transfer software (one or two companies offer this software as part of their retail package. This will prove to be extremely helpful! Good Luck! If you have any comments on this review (e.g. I forgot something or made a mistake) please add them to help your fellow computer brothers.

    I have read a few of the reviews for this product which have mentioned the drives suddenly disappearing from their system and refusing to boot. I have this problem frequently, and it has nothing to do with the drives. If you use a RAID 0 array as a boot drive, and you update your BIOS, the SATA controller option in BIOS is changed from "RAID" to "AHCI" for some reason (at least on my ASUS motherboard). If this does happen, the machine will not boot since it is looking for a single drive in AHCI mode and not the RAID 0 array. This problem is easily fixed by accessing the BIOS and changing your AHCI setting to the RAID setting, saving the settings (!), and rebooting. Your system should come up just fine.

    Ed561
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  • Sam
    5.0 out of 5 stars Still Going Strong
    Reviewed in Canada on October 27, 2024
    Capacity: 1 TBVerified Purchase
    I bought this about 12 years ago. Still works perfectly. Used mainly for backups.
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  • José Zamorano
    5.0 out of 5 stars WD Caviar
    Reviewed in Spain on November 9, 2020
    Capacity: 1 TBVerified Purchase
    Western Digital Caviar es una gama de gran calidad de dicha empresa. Es un disco duro rápido (7200rpm) y de bastante durabilidad. He tenido varios disco de esta gama y han cumplido durante todos estos años.
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  • Shawn
    5.0 out of 5 stars Great size and very fast.
    Reviewed in Canada on January 20, 2014
    Capacity: 2 TBVerified Purchase
    I bought this for my new computer. Installed about 40 games onto it and I still have plenty of room to spare. I've also got my OS on it (windows 8.1) and it boots up quickly. I was considering installing my SSD from my laptop onto the new computer for the OS, but this HD is handling boot-up and read/write very well. The only down-side is it's a little loud for my taste, but I have a Fractal Define R4 with sound dampening material.
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  • Jimbo
    5.0 out of 5 stars Five Stars
    Reviewed in the United Kingdom on June 22, 2015
    Capacity: 4 TBVerified Purchase
    I love it.
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  • andyt22
    5.0 out of 5 stars Great disk and a friendly warning about using newer disks in ZFS pools...
    Reviewed in the United Kingdom on March 25, 2015
    Capacity: 2 TBVerified Purchase
    Although discontinued some time last year (2014), this disk was deliberately purchased in preference to its newer and cheaper replacement. This older disk has 512 byte sectors while the new replacement has 4096 byte sectors, with built-in 512 byte sector emulation for older systems & disk controllers. For most people, this 512 byte emulation is fine and allows newer 4k sector Advanced Format disks to be used as direct replacements. However, if the entire unpartitioned disk is being used in a ZFS pool built with 512 byte sector disks (as in my case), replacing a failed disk with a newer 4096 byte disk won't work and the ZFS 'zpool replace' command will abort displaying a warning about sector size mismatch. In this case it's essential that an exact replacement is fitted.

    DIsk is working fine, replacing a failed disk in a 8TB ZFS pool with no problems, rebuilding itself in about 3 hours.
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