Western DigitalRed Pro 4TB 3.5-Inch 7200rpm 64MB Cache NAS Hard Drive (WD4002FFWX)

WD's Red Pro NAS drives are fantastic platter-style disk drives. I was able to grab a couple of these at 2 different times about a year apart for a low price via Amazon Warehouse deals, and have used them now for quite some time, and they work fantastically.The only complaint I might have is that the 128MB cache variety of the 6TB model seems to be going the way of the dodo, so if I ever finally get an actual 4-bay NAS, I may have a hard time finding another pair of the 6TB 128MB cache models of these (the newer ones are 256MB cache, which is better, obviously, but drives must match perfectly to do things like RAID arrays and disk mirroring).

This WD Red Pro 6TB drive (WD6002FFWX) is the newer version of the discontinued WD Red Pro 6TB drive (WD6001FFWX) . Congratulations on finding this one on Amazon, as at the time of this review Amazon still has it listed as simply "Western Digital Computer NAS Hard Drive 128 MB Cache 3.5-Inch Internal Bare or OEM Drives" with no mention of WD Red Pro 6TB in the title. A search for WD Red Pro 6TB only brings up the discontinued model and several marketplace sellers trying to exploit the search confusion by almost doubling the retail price of the older model. I have reported to Amazon the confusing and non-descriptive title for the newer model.I am running multiples of these WD Red Pro 6TB drives (WD6002FFWX) in a large (and newer) Asustor NAS device. They are performing flawlessly so far in a RAID 10 configuration. The included five year warranty for these Pro drives is a nice additional benefit.I highly recommend WD Red Pro drives for their intended use with NAS devices.

The WD Red Pro 4TB 3.5-Inch 7200rpm 64MB Cache Hard Drive has become my gold standard for NAS hard drives.

To summarize: 4/4 WD red drive showed more than 500 bad sectors after 2.5 years of light use. WD has excellent service and honoured on out of warranty replacement. Could get only 3 replaced. Also WD drives run much hotter than Seagate Ironwolf. S.M.A.R.T quick tests did not catch drive errors. Extended tests didDescription:I used 4 3.6TB Western Digital HDDs to build NAS in RAID 5 initially. Used the NAS to backup my files and used it very few times a year (more writes than reads). It was shut down most of the nights. Still WD drives started failing one by one. Luckily Western Digital has excellent service and replaced one of the drives in the warranty and another one just out of warranty. 3rd drive failed very recently as showed in the picture. The drive was run for ~21500 hours approximately and started to fail with more than 500 bad sectors. These sectors showed up while I was rebuilding/repairing Drive 3 (replaced by WD RMA). I added a new Seagate Ironwolf drive recently to review it against WD. So far it is good and running a lot more cooler (less heat) than its WD rivals.

Added it to my store security system that I have previously replaced the hard drive 3 times in 2 years. Got a new system and had to replace its hard drive in 4 months. I did not know that using a home computer HDD was not a good idea as they are not manufactured for the contant running and heat a security system sees. This one has been going 5 months with no issues.

Drives are great, but was very disappointed with price ended up with. Ordered them for $279 Cdn, from Canadian site, but when came through ended up paying in US $ and extra costs from US. Coiup,e months after bought had a refund applied but not nearly enough.Is first issue I’ve had with Amazon, is chalk up as learning experience to print when order so have something to show them.

Replaced a drive on our NAS with same model. Easy. Works great.

I bought 3 for my synology ds416play all new together. All three click loud. I have to now replace them one by one to WD so that I do not lose all the data it took me forever how to set up as backup from Dropbox iCloud and iPhone. I have spent 10 hours researching how this happens and they were just bad drives. Don't buy from amazon because they will not let you return them to them, you have to go through WD once you open them.