HGST Ultrastar He10 | HUH721010ALE600 (0F27452) | Power Disable | 10TB SATA 6.0Gb/s 7200 RPM 256MB Cache 3.5in HDD | 512e | Enterprise Hard Drive (Renewed)

I had my doubts with some few negative feedback on the item, but I had faith in knowing decades of previous machines I had built on Hitachi drives.Upon arrival and installation, i was pleasantly relieved that it worked great right out of the box. Unlike previous drives, I did have to use the dongle adapter to bypass the new remote power down system standards, but once I did, it registered immediately and formatted fine. Tested rigorously three times using surface tests overnight.100% functional no bad sectors nor a single error warnings. Proceeded to copy my old drive and it was going at 180mb/s during that write process.Overall a great unit.Read head clicking is somewhat more noticeable in random read operation but that’s been normal for most modern Hitachi HGST drives.Heat properties are fine too. File copying took 3 hours, for 3.5GB of information. No warnings for heat related issues and PC fans stayed nice and stable.10Gb is a lot of storage! $78, Hitachi drive quality, I will take it!!

Multiple buys. Some problems but seller made it right.

I was not that bothered by the speed since I use this only for backup and it spends 29 days a month powered off, then 1 day powered on for backups.... but...I have been moving data onto this drive and I can tell you this is NOT an enterprise drive. This is a HOME drive and the knocking noises I hear inside this drive scare me. I would be worried that ANY drive made as many knocking noises as these heads do as they are moving around. It sounds like a fan spinning inside and its getting hit by a cord or string and as it bounces around and drops back into the fan again and again it makes another knock. To me.. the knocking noises are very upsetting since I have 8 of the TRUE HGST 10TB drives that are in the same JBOD box and they are all silent doing the exact same job. Only these (2) drives make these noises.I will be boxing and returning these as soon as I find a replacement. It seems maybe the HGST drives are "almost" or "completely" gone and WD is going to capitalize on the reputation for quality to sell their cheaply made drives. Since My original 4TB HGST drives (16 of them) NEVER failed me in 6 years. i have been replaceing them with these 10TB drives, but.. there is no way I can trust a drive that sounds like something is bouncing around inside to last like my real HGST drives did. I only have 8 of the real drives and I will be looking for some remaining "old" stock of them and when I find them, I will send these back. These are not broken but they are such inferior quality to my original HGST drives, that they would drive me crazy. I heard them knocking as I walked by.. while my fan was on and making noise!!!!

Working great one month in. I would recommend them for the price as backups. I bought 5 of these drives. 4 are in use in a Qnap Tr-004 working hard in a RAID 5 hardware setup. The 5th drive is a backup to the Qnap. They are working great.These disks are a great deal for the money and I would buy them again, and have.... (with a couple of caveats, see below)I give this a 'solid 4+ star' because of two issues: First, the drive model numbers advertised here are NOT the same as what I got. The advertised product is a _____ALE600 model number... what I received was a _____ ALE604 model number. The ALE604 model has a slightly higher failure rate long term.... The rating gets a tiny 'ding' for not being the exact same model number. Second, the first 4 drives I received had between 53,500 and 54,500 hours on them (I didn't bother to check the 5th). That's 6.2 years of use. So, they get another tiny 'ding' in the rating for being a bit old.... even a 'refurbished' hard drive. If these are being used for a critical backup, that's a lot of time on a hard drive to count on them in a crisis. I do not think these are a good idea as a primary drive as they are very used with a lot of 'mileage' on them already (unless you get lucky and get one that was stored as a 'cold' spare). If they had a couple less years of use, and were the exact model number advertised, these would get 5 stars.But if you know what you are doing with hard drives (and that these might have a lot (extreme amount) of mileage (hours) when you get them), these are great for the price. I would recommend them. I would buy again, but with 5 of these 10TB models, and 4 in a Raid 5 array, I'm set for half a decade at least (I hope).Update January 24th: All 5 drives performing well after 6 hard weeks of use.