Western DigitalWD101KRYZ 10 TB Enterprise Hard Drive - Gold

We bought two of these Western Digital WD4002FYYZ 4 TB 3.5-Inch Hard Drives, to populate a NAS system.For those people who may be unclear about a NAS, it is a network-attached storage device, which holds one or more hard disks and connects into your network, giving other devices access to the stored content. This Western Digital WD4002FYYZ 4 TB 3.5-Inch Hard Drive – Gold, is well suited to be used in NAS devise. This drive, in particular, has a storage capacity of 4TB and has a substantial 128MB Cache.The accompanying bumf states “to make sure all of this data is kept safe the GOLD HDD’s are equipped with enhanced RAFF Technology which monitors the drive and corrects both linear and rotational vibration in real time, this along with the Multi-axis shock sensor and StableTrac Technology gives you peace of mind to know your data is safe”.In operation, the drive noise is better than OK and has a rotation speed of 7200 rpm. I must confess I am a western digital user when it comes to getting hard drives, or should I say populating a new NAS system.It is early days yet - nonetheless, I am happy with the Western Digital WD4002FYYZ 4 TB 3.5-Inch Hard Drive so far. I shall update if there any issues, hence my four-star rating.

Bought during an upgrade from a two bay to a four bay Synology NAS along with a WD Red Pro 6Tb and joining two 3Tb WD Red standards. It was only whilst spending a bit more time reading reviews of the regular WD Reds that I discovered they are not equipped to dampen vibrational forces in all planes, so I decided to go higher up the quality chain and gain in MTBF whilst I was doing it.The Two Larger drives run hotter than the 3Tb drives both averaging around 46'C whilst their smaller counterparts are running closer to 37'C. The larger drives are lower down and the smaller drives sit at the top of the NAS so in a way I was expecting the heat to collect at the top, but after looking into the performance data I found that it's normal for Golds to run hotter and its still well within acceptable range. I've got monitoring and logging in place and will consider installing a large slow fan into the server cabinet to encourage a little upward draft through the stack and push the heat up the chimney running through the spine of the cabinet.From a Sound point of view I expected to hear more noise from the Gold disks based on reviews and migrating from two to four disks but in reality I've heard little to no difference from the NAS which is still only really audible when it spins up from sleep based on client access over the day, reaching a peak in the early hours of morning whilst backups and Raid Scrubbing tend to be carried out.Performance is improved, but I'm putting this down to the newer Synology box more than drive speed and I'd think it would only really be valid to start comparing identical RAID Configs using Identical Drive Arrays.I'll update any of my HDD reviews if I encounter any NAS issues over the years. I've a pile of spare space again now so do not expect to have to swap out drives for around 5 years or so when I will probably pull the 3Tb drives and replace with what ever size is economical at the time...

Can't comment on the reliability, which is frankly the reason I bought it - I only have two and they both still work perfectly - but the warranty suggests WD are prepared to back up their longevity claims. What I can say is that it seems marginally faster than the WD Red (of which I've had many, with pretty good reliability in 24/7 operation) but it is very much louder than the Red. The head seek noise is very noticeable - it's not a self calibration issue which I've had in the past with some drives, it's the noise of regular operation. It's not particularly intrusive in typical uses, but if you're in an otherwise silent place, it will draw your attention.Update August 2020: stand by all the above, but will add a comment on reliability - 32 months after purchase and continuous 24/7 server use since then, still going strong.

Took quite a while to get here and then arrived broken out of the box. Tried it in my NAS and the drive wasn't recognised at all - there were some faint clicking noises similar to those you get from a dropped head. Spent a great deal of time on the phone with Synology before coming to the conclusion that the drive must have been DoA. I do have one of these drives in the NAS already which has been fine for 2 years but suspect that the problem with this one might have had something to do with the minimal packaging - no padding or protection other than a thin foil condensation bag and the usual cardboard surround. I would suggest that this is not really good enough for sensitive electrical items. Returned to Amazon without any quibble but rather than a refund, I did need a drive and they were not able to replace only suggest that I buy elsewhere. Not really up to the standard you expect from Amazon.

Does what it says on the tin ... However, old Mac Pro users beware, these have a different screw config so the existing drive rails won't work. I had to purchase new drive rails and they're not cheap

No stability problems so far. Too noisy for a living room NAS, compared to Reds, something that is not clear from product sheets.

This is a datacentre hard drive and with light use would expect at lest ten years use. I have had 8 WD 1TB Desktop SATA Green drives running as raid 6 for 8 years then they were used in other units as non raided drives. As server upgraded in 2011 to 16 2 TB drives. But only time can tell you if you made the right choice.

True test will be longevity. performing as expected so far.