SATA III 6Gbps interface and with 64MB cache. Includes WD NASware technology and IntelliPower rotation technology to optimise performance and reduce power consumption.
SATA III 6Gbps interface and with 64MB cache. Includes WD NASware technology and IntelliPower rotation technology to optimise performance and reduce power consumption.
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The lowest price for Western Digital WD40EFRX 4 TB WD Red, 3.5 Inch, SATA III 5400 RPM 64 MB... right now is $196.95 at eBay.com.au.
The all-time low was $98.48 on 17 Mar 2026 — today's price is 100% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 20 Aug 2026.
Western Digital WD40EFRX 4 TB WD Red, 3.5 Inch, SATA III 5400 RPM 64 MB...
SATA III 6Gbps interface and with 64MB cache. Includes WD NASware technology and IntelliPower rotation technology to optimise performance and reduce power consumption.
SATA III 6Gbps interface and with 64MB cache. Includes WD NASware technology and IntelliPower rotation technology to optimise performance and reduce power consumption.
Last updated at 20/08/2026 04:48:19
Western Digital Red 4TB WD40EFRX 5400RPM 3.5 inch Internal NASware HDD Hard Disk
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
originally posted on westerndigital.com
I build custom computers for artists, and they absolutely MUST have reliable, long-term data storage for their art work. WD Red and Gold are the best for their purpose.I purchased two of these in 10TB for in internal RAID 1 array, as these are excellent for long-term, heavy use storage. One of them was bad, with very slow data transfer and loud clicking. WD Customer Service replied quickly with an RMA for a refund and supplied the UPS return label. Problems with WD products are very rare, but when one does occur, their customer service is the best that I've encountered. I've dealt with CS at three of their larger competitors, and it's due to WDs superior response to a problem that their HDDs and SSDs are the only products that I will now use for data storage and ... MoreI build custom computers for artists, and they absolutely MUST have reliable, long-term data storage for their art work. WD Red and Gold are the best for their purpose.I purchased two of these in 10TB for in internal RAID 1 array, as these are excellent for long-term, heavy use storage. One of them was bad, with very slow data transfer and loud clicking. WD Customer Service replied quickly with an RMA for a refund and supplied the UPS return label. Problems with WD products are very rare, but when one does occur, their customer service is the best that I've encountered. I've dealt with CS at three of their larger competitors, and it's due to WDs superior response to a problem that their HDDs and SSDs are the only products that I will now use for data storage and transfer.My customers appreciate the reliability of these drives.
originally posted on westerndigital.com
These are by-far the most vibration-laden drives I have ever worked with in the 25+ years I have been building PCs. Even with being installed in a grommeted caddy, and having that caddy suspended in my drive cage, so much vibration still gets transferred to my case and can be heard two rooms over. Significant vibration is even transferred through the power and sata cables and into my case's side panel. I've never seen drives this poorly built in my life! These are rated to be spinning 24/7, but they are by far the loudest thing in my home whenever they spin up. I regret my purchase every single time they power on. I wish I had installed these prior to my return date so I could have sent them back. There is no way my data will last very long with how bad these ... MoreThese are by-far the most vibration-laden drives I have ever worked with in the 25+ years I have been building PCs. Even with being installed in a grommeted caddy, and having that caddy suspended in my drive cage, so much vibration still gets transferred to my case and can be heard two rooms over. Significant vibration is even transferred through the power and sata cables and into my case's side panel. I've never seen drives this poorly built in my life! These are rated to be spinning 24/7, but they are by far the loudest thing in my home whenever they spin up. I regret my purchase every single time they power on. I wish I had installed these prior to my return date so I could have sent them back. There is no way my data will last very long with how bad these vibrate. These drives are SUPPOSED to be a higher class of product, the price tag confirms as much.Note: The drives in question are the 8tb red+ with 256mb cache (WD80EFBX). Of course they just spun up again while confirming the model number with hddscan, and I'm even more displeased.
originally posted on westerndigital.com
I got these because they should be the best possible drive for My Cloud Expert Series EX2 Ultra, it came with two 4TB Red drives at 5400 RPM, absolutely silent but not the fastest. So based on the capacity, speed, and CRM vs SRM I was sold and these were on sale for 200 or so. Got the drives and removed one of the 4TB drives and rebuilt the RAID1 mirror. I quickly noticed how much louder the pro drive was than the regular and that it had almost a rythmic thud, made me think click of death. Kept moving forward hoping it was something about the RAID build process. Replaced the other 4tb with the second 12tb, expanded the drive and I had a 12tb mirror just like I wanted. Extreemly fast in comparison with the 4TB WD Red drives but was hot and extremely loud, across the ... MoreI got these because they should be the best possible drive for My Cloud Expert Series EX2 Ultra, it came with two 4TB Red drives at 5400 RPM, absolutely silent but not the fastest. So based on the capacity, speed, and CRM vs SRM I was sold and these were on sale for 200 or so. Got the drives and removed one of the 4TB drives and rebuilt the RAID1 mirror. I quickly noticed how much louder the pro drive was than the regular and that it had almost a rythmic thud, made me think click of death. Kept moving forward hoping it was something about the RAID build process. Replaced the other 4tb with the second 12tb, expanded the drive and I had a 12tb mirror just like I wanted. Extreemly fast in comparison with the 4TB WD Red drives but was hot and extremely loud, across the room loud. Lived with it for a week and decided that I deserver better for what I pay. Initiated a return and picked up two 12tb Red Plus drives, these are almost as good but dead slient in my NAS. They are not as responsive or do not move as much data but the are certainly an upgrade from the 4tb WD Red that the NAS came with and to be honest they were not bad either, just lower capacity and a bit slower. Disappointed as I really wanted to Red Pro drives but simply could not deal with the noise they made nor the risk to may data.
Western Digital Red 4TB WD40EFRX 5400RPM 3.5 inch Internal NASware HDD Hard Disk
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
I build custom computers for artists, and they absolutely MUST have reliable, long-term data storage for their art work. WD Red and Gold are the best for their purpose.I purchased two of these in 10TB for in internal RAID 1 array, as these are excellent for long-term, heavy use storage. One of them was bad, with very slow data transfer and loud clicking. WD Customer Service replied quickly with an RMA for a refund and supplied the UPS return label. Problems with WD products are very rare, but when one does occur, their customer service is the best that I've encountered. I've dealt with CS at three of their larger competitors, and it's due to WDs superior response to a problem that their HDDs and SSDs are the only products that I will now use for data storage and ... MoreI build custom computers for artists, and they absolutely MUST have reliable, long-term data storage for their art work. WD Red and Gold are the best for their purpose.I purchased two of these in 10TB for in internal RAID 1 array, as these are excellent for long-term, heavy use storage. One of them was bad, with very slow data transfer and loud clicking. WD Customer Service replied quickly with an RMA for a refund and supplied the UPS return label. Problems with WD products are very rare, but when one does occur, their customer service is the best that I've encountered. I've dealt with CS at three of their larger competitors, and it's due to WDs superior response to a problem that their HDDs and SSDs are the only products that I will now use for data storage and transfer.My customers appreciate the reliability of these drives.
These are by-far the most vibration-laden drives I have ever worked with in the 25+ years I have been building PCs. Even with being installed in a grommeted caddy, and having that caddy suspended in my drive cage, so much vibration still gets transferred to my case and can be heard two rooms over. Significant vibration is even transferred through the power and sata cables and into my case's side panel. I've never seen drives this poorly built in my life! These are rated to be spinning 24/7, but they are by far the loudest thing in my home whenever they spin up. I regret my purchase every single time they power on. I wish I had installed these prior to my return date so I could have sent them back. There is no way my data will last very long with how bad these ... MoreThese are by-far the most vibration-laden drives I have ever worked with in the 25+ years I have been building PCs. Even with being installed in a grommeted caddy, and having that caddy suspended in my drive cage, so much vibration still gets transferred to my case and can be heard two rooms over. Significant vibration is even transferred through the power and sata cables and into my case's side panel. I've never seen drives this poorly built in my life! These are rated to be spinning 24/7, but they are by far the loudest thing in my home whenever they spin up. I regret my purchase every single time they power on. I wish I had installed these prior to my return date so I could have sent them back. There is no way my data will last very long with how bad these vibrate. These drives are SUPPOSED to be a higher class of product, the price tag confirms as much.Note: The drives in question are the 8tb red+ with 256mb cache (WD80EFBX). Of course they just spun up again while confirming the model number with hddscan, and I'm even more displeased.
I got these because they should be the best possible drive for My Cloud Expert Series EX2 Ultra, it came with two 4TB Red drives at 5400 RPM, absolutely silent but not the fastest. So based on the capacity, speed, and CRM vs SRM I was sold and these were on sale for 200 or so. Got the drives and removed one of the 4TB drives and rebuilt the RAID1 mirror. I quickly noticed how much louder the pro drive was than the regular and that it had almost a rythmic thud, made me think click of death. Kept moving forward hoping it was something about the RAID build process. Replaced the other 4tb with the second 12tb, expanded the drive and I had a 12tb mirror just like I wanted. Extreemly fast in comparison with the 4TB WD Red drives but was hot and extremely loud, across the ... MoreI got these because they should be the best possible drive for My Cloud Expert Series EX2 Ultra, it came with two 4TB Red drives at 5400 RPM, absolutely silent but not the fastest. So based on the capacity, speed, and CRM vs SRM I was sold and these were on sale for 200 or so. Got the drives and removed one of the 4TB drives and rebuilt the RAID1 mirror. I quickly noticed how much louder the pro drive was than the regular and that it had almost a rythmic thud, made me think click of death. Kept moving forward hoping it was something about the RAID build process. Replaced the other 4tb with the second 12tb, expanded the drive and I had a 12tb mirror just like I wanted. Extreemly fast in comparison with the 4TB WD Red drives but was hot and extremely loud, across the room loud. Lived with it for a week and decided that I deserver better for what I pay. Initiated a return and picked up two 12tb Red Plus drives, these are almost as good but dead slient in my NAS. They are not as responsive or do not move as much data but the are certainly an upgrade from the 4tb WD Red that the NAS came with and to be honest they were not bad either, just lower capacity and a bit slower. Disappointed as I really wanted to Red Pro drives but simply could not deal with the noise they made nor the risk to may data.
I have been using wd red drives in my servers for quite a while now, while my coworkers prefer Seagate drives I have held to my ways. I have 8 of these drives in a server used for archive and backups in a climate controlled server room with several other backup servers. They are in double parity raid to be able to rebuild from 2 drive failures It pulls light duty with only a small amount of data being written to and from it daily. About 1 year after install the first drive failed, I thought nothing of it, replaced the drive and rebuilt the array, sometimes drives fail. Now about a year later two more drives failed at almost the same time. I took the array offline in order to safely rebuild the array, installed two new drives and began the rebuild. Rebuild failed, ... MoreI have been using wd red drives in my servers for quite a while now, while my coworkers prefer Seagate drives I have held to my ways. I have 8 of these drives in a server used for archive and backups in a climate controlled server room with several other backup servers. They are in double parity raid to be able to rebuild from 2 drive failures It pulls light duty with only a small amount of data being written to and from it daily. About 1 year after install the first drive failed, I thought nothing of it, replaced the drive and rebuilt the array, sometimes drives fail. Now about a year later two more drives failed at almost the same time. I took the array offline in order to safely rebuild the array, installed two new drives and began the rebuild. Rebuild failed, array lost, data lost. Turned out that some of the other drives were having health issues as well that weren't encountered until rebuild. Bad sectors caused the array to be corrupted. After running some tests on the drives individually I found that only 3 of the original 8 drives were still good, 3 total failures (1 replaced early on) and then 3 more with bad sectors failing the self health check. Not sure if I ordered from a bad batch or just incredibly unlucky. I have similar drives in this environment that have been running hard for 5+ years without any issues including an array of Seagate sata drives that has been pulling daily duty for 7 years without a failure. Granted these reds are not enterprise level SAS drives.. but I expected a lot more from them. Sorry WD but in light of these events and your poor business practices of pawning off those inferior smr wd red drives on me last year (look it up) I will no longer be purchasing from you. Looks like I will be researching Toshiba mg and Seagate ironwolf or exos drives for the next build
Two reviews in one...Overclockers' support staff: 5/5 - they've been really helpful on these drives.The drives themselves: 8/17. . . as in, I've bought 8 of them and RMA'd 9 drives.I bought 8 drives to start with, 2 of which wouldn't detect via my HBA (but would in Windows), also had a 'beep' prossibly a power related issue - RMA 1.The server detected SMART errors on 4 of the original and 1 replacement drive... this was confirmed via the WD Dashboard download (Windows) - RMA 2.Of the 5 replacement drives, 2 of those had errors detected by the WD Dashboard tool - RMA 3.Those 2 replacements seem OK...
Two WD40EFRX were put into PLeX server 7-3-15.Now they still run but along side eight WD80EFAX drives. Each drive has a MyBook B.U. drive.I have not lost a single drive or had a single problem.As with ANY electronic device the first thing I made absolutely sure of was the presence of a Power Supply that has 33% more GOLD power than the power requirements of the whole of all the parts that make up the Device, in this case a Server. I also back that Power Supply up with clean power that only a quality U.P.S. can provide, less ripple, less brown outs (the real killer/not black outs) less PROBLEMS!☆Second I make sure that proper amount of + AND - CFM flow drains the heat from the server....anyone can just slap some fans in a P.C. and say they have proper heat ... MoreTwo WD40EFRX were put into PLeX server 7-3-15.Now they still run but along side eight WD80EFAX drives. Each drive has a MyBook B.U. drive.I have not lost a single drive or had a single problem.As with ANY electronic device the first thing I made absolutely sure of was the presence of a Power Supply that has 33% more GOLD power than the power requirements of the whole of all the parts that make up the Device, in this case a Server. I also back that Power Supply up with clean power that only a quality U.P.S. can provide, less ripple, less brown outs (the real killer/not black outs) less PROBLEMS!☆Second I make sure that proper amount of + AND - CFM flow drains the heat from the server....anyone can just slap some fans in a P.C. and say they have proper heat management and many will slap a few extra fans in and say they REALLY have proper heat management. NO, bad user, BAD!! This is not how heat management worx! Read a book or a forum post from someone that does understand proper heat management and get that heat soak out of your drives!With just these two important steps well taken care of my hard drive longevity has made insane increases.Just like any "Review Collection" many people don't seem to take into account that you have absolutely no way of verifying the credentials or even just experience or wisdom of the post's owners.In my R.C. touring car Racing career and P.A./Home/Auto Audiophile hobby/second biz experience i ALWAYS started with fantastic power supply and heat removal! Amplifiers should provide MORE watts than the speakers they drive and the gains turned down to achieve zero THD for example.No one does this anymore, everyone just follows the person in front of them with blinders and blames anyone and everyone else they can when a problem arises.
I loaded up a bunch of competitor's 12TB drives in my Synology 1522+ NAS and used it for Apple Time Machine. At that time, I didn't understand that if I had a hot spare, I only needed to implement SHR and not SHR2 RAID, and I wasted an entire drive's worth of space.Fast forward and I found a cheap DX517 expansion module on an auction site, which I stocked with Western Digital 12TB WD Red drives. I stopped the SMB file services, moved the shared folder to the expansion module, re-formatted the base unit's drives, the moved them back.No errors and everything is now running again, letting me use the DX517 with the WD Red drives to hold my music and video libraries. Unlike the other brand of drives, the WD Red were verified and are running properly in a minimum of ... MoreI loaded up a bunch of competitor's 12TB drives in my Synology 1522+ NAS and used it for Apple Time Machine. At that time, I didn't understand that if I had a hot spare, I only needed to implement SHR and not SHR2 RAID, and I wasted an entire drive's worth of space.Fast forward and I found a cheap DX517 expansion module on an auction site, which I stocked with Western Digital 12TB WD Red drives. I stopped the SMB file services, moved the shared folder to the expansion module, re-formatted the base unit's drives, the moved them back.No errors and everything is now running again, letting me use the DX517 with the WD Red drives to hold my music and video libraries. Unlike the other brand of drives, the WD Red were verified and are running properly in a minimum of time with a minimum amount of fuss. Will buy again!
These knuckleheads shipped me 2 hard drives not in their boxes and with no packaging. Just 2 hard drives bouncing around in an empty card board box. Hey, guess what they are damaged. Now I know why WD is going out of business and their stock is in the toilet. These folks just waisted two weeks of my life. Waiting for the shipment and waiting to get my money back. Never again. Good bye.
Recently I set up a home network NAS server, two actually; one new and one purchased used on ebay. The used one is a 4-bay unit that arrived with 3 of these WD30EFRX 3TB NAS drives, in a Raid-5 array. That left the fourth bay empty, and as the the 3 WD drives were all matching I opted to find another drive to match them and set up a new array with all four bays in use. These older drives are not the WD Red drives being sold today. The specs appear to be the same, but there's a major difference between these older Red's and today's drives: These drives use CMR technology, while today's Red's use SMR. I'm not going to waste the space defining these terms, but I recommend you research them as to how they differ. If you want the superior CMR in a WD Red NAS drive today ... MoreRecently I set up a home network NAS server, two actually; one new and one purchased used on ebay. The used one is a 4-bay unit that arrived with 3 of these WD30EFRX 3TB NAS drives, in a Raid-5 array. That left the fourth bay empty, and as the the 3 WD drives were all matching I opted to find another drive to match them and set up a new array with all four bays in use. These older drives are not the WD Red drives being sold today. The specs appear to be the same, but there's a major difference between these older Red's and today's drives: These drives use CMR technology, while today's Red's use SMR. I'm not going to waste the space defining these terms, but I recommend you research them as to how they differ. If you want the superior CMR in a WD Red NAS drive today you must buy WD Red Plus. There's a big difference in price. Since the 3 WDs I inherited with my NAS server were not new, but in perfect condition with no errors and great specs, I purchased a used drive here on ebay. The price was excellent, shipping was quick and the drive checks out perfectly. Of course, used is used, but let's be real here. I'm running a home network for my pleasure, and to create adequate storage for tons of media and information on all kinds of subjects I've been collecting since the1980's. TheseWD30EFRX drives are perfect for this! Remember, NAS is for storage, not for backup, so I backup my storage. I'm also watching the drives' conditions for deterioration. You cannot beat the quality of these drives for the prices they are being sold at!
