Western Digital 20TB WD Red Pro NAS Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, CMR, 512 MB Cache, 3.5" - WD201KFGX

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The packaging was appalling. 2 units of hard disk drive wrapped in a layer of bubble wrap in an amazon bubble wrap envelope! Should I return the HDD or should I take the risk of the HDD bad sector on my NAS later?

I use these for storage back at our office for the TV shows we make. We use separate SSD drives for on the go storage and have a WD Red Pro at the office for back up. They are reliable and quick and we feel they are the best on the market at the moment.

I bought two units of the 20TB version of this WD Red Pro drive for my new storage system. I particularly went with the 20TB version, because - according to the datasheet on Western Digital's website - it is less noisy than some of the lower capacity models. I tested one of the units, not in my storage system, but in my open bench USB 3.0 to SATA Adapter (with a max transfer rate of over 500MBps). It performed well, the sequential read and write speeds as high as ca. 270 MBps and ca. 130 MBps on the low-side. This is typical of all HDDs: on the outside of the drive they can pack more data on one track than on the inside, so on each rotation they can write and read more data on the outside area of each disk platter. The write and read tests were also successful, no bad blocks were reported. For some performance figures, please see the attached screenshots (which have the serial number removed/redacted). Please note that the CrystalDiskMark results are performed on an empty HDD, so they seem to be executed in the "fast" section of the drive. The other graphs were taken from HDSentinel, relevant there are the bottom graphs, which show transfer rates across the surface of the drive. The sound of my test unit was also pleasant enough, the clicking wasn't too bothersome. But since I will move this drive into the case of my storage system very soon, the clicking will be a lot less noticeable than it is already. One action I always perform, BEFORE opening the product box of an HDD or SDD is to check the serial number on the box against the manufacturer's warranty website to ensure that the item is covered by the manufacturer's warranty. I do this both when amazon is the seller and when a 3rd party is the seller and amazon is just the fulfillment party. (I do not buy HDDs from a 3rd party seller that does not have fulfillment with amazon.) This is to avoid OEM/gray-market units that aren't covered by the manufacturer's warranty. A store warranty by a 3rd party seller is of no use to me, since these sellers come and go and I also don't want the hassle of dealing with them. Since the Red Pro series offers a manufacturer's warranty of 5 years, and HDDs fail frequently enough to make such a warranty very valuable, I always insist getting the manufacturer's warranty and even will query 3rd party sellers, if their stock with amazon is covered by such a warranty. As it turned out, the serial number of second 20TB HDD that I ordered (from a 3rd party seller, since amazon themselves were out of stock) did not show up in the manufacturer's database for U.S. warranty, so I can only assume that it is a gray-market unit and I immediately returned it. (I can only hope that the 3rd party seller will have to bear the full cost of this return, since I emailed them and asked about the manufacturer's warranty, before the item ever shipped, but they didn't answer my question.) One more tip: There has been some research that failure rates of HDDs from the same batch are somewhat correlated, so I always try to space out my purchases (either in time or by using different vendors) to increase the chance that I will be getting units from different batches. That's why I bought from two different 3rd party sellers on amazon (one of which apparently sold a grey-market unit), without disclosing that fact ahead of time.

I bought 2 of these to replace a set of old 750G Samsung disks that had been running nearly non-stop for 12 years. They still ran 'kinda' OK but sometimes they started to get kicked from my RAID config... so it was time to change. So far so good. The sound is a little less than the Samsungs but you can still hear them, nothing bothersome though. Speed-wise, 1 disk is about as fast as 3 of those Samsungs in raid-0. They're doing their job and here's me hoping these drives will last me at least a decade too. Only time will tell ... I also bought 2 SSD's around the same time, I'm curious which will give up first but I'm sure they won't make these disks anymore when they do kick the bucket. :) I'm not doing anything too fancy on them, they're just meant to keep data. All software that needs speed is running on SSD but I'm happy with the speed of the data. You can probably get faster disks but you'll pay for it too and if it's not necessary it's just a waste. These seemed like a very good compromise (for my personal use).

Conforme à la description ! Très silencieux et rapide !

Installato in un Synology DS224+, è stato immediatamente riconosciuto mettendo a disposizione lo spazio per la creazione del volume del nas. Ora speriamo nella durata. Performance velocistiche coerenti con le attese … considerato che è un disco meccanico e non un ssd.

discos duros para NAS, preparate para fallo a las 60000 horas