HGST Ultrastar 7K4000 3TB 7200RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive (Enterprise Grade) HUS724030ALA640 (0F19455) - 5 Year Warranty

I have purchased many Ultrastars starting back in the IBM days. These always seem to have decent speed and are durable. I have had various batches of drive failures from all other major brands over the years. I think the ultrastar name has been bought out by various companies over the years, so I can't speak of the quality for all possible variations. One thing I would recommend based on other reviews is to verify the warranty online and check the SMART values on the drives. My understanding is that different vendors fulfill some items on Amazon, so some might try to sneak in a refurb. I was lucky as mine had 0 power on hours and had full warranty remaining and at a great price. My latest purchase has run in a DVR for over 2 months and 3 previous drives that I purchased for over a year ago with no issues.

Excellent 👍🏼

Week 1: Perfect. Took pics of some external scratches that seem to indicate prior installations. But S.M.A.R.T. indicates zero hours. They have been spinning for almost 24 hrs now doing a complete SMART update w no problems found yet. I've put two of these drives into a 4 drive Synology Hybrid Raid alongside a very old Seagate w 36,000 hrs already on it and a semi old Western Digital w 2,400 hrs on it. I intend to really put these disks through a lot of work over the next few months. It'll take a few weeks of 100% utilization on the disks to do initial things to address a failed disk in another Synology NAS. I am trying to save 4.7 tb of nearly 30 years of family memories, photos (only a few hundred scans for anything prior to 2002, *whew*) and videos. Synching the two will take a week. Building file indexes will take an additional couple more days. And then building the photo and video indexes and facial recognition groups will probably take months on top of that at 100% cpu utilization. So this will be a test of both the drives and the new Synology NAS. All things are working out as expected as of now. One interesting variance at this point...the WD drive w 2,400 hrs on it had finished a long SMART test in about 10 hrs, whereas after the 36,000 hr Seagate is only 30%, and these two new HGST drives 10%. The HGST drives have higher advertised specs than either of the two older drives. Faster rpm, more cache, and faster throughputs. This is curious. Not yet sure how to register for the 5year warranty. Hopefully screen shots of the advertised descriptions and purchase date is sufficient for if/when they fail. My Seagate drive w 36,000 hrs is running like a rock for many years! Update Week 2: One of the HGST drives is still only at 40% complete for long SMART test. The 36,000 hr Seagate finished this morning. The other drive somehow cancelled the long SMART test. SInce it has been almost three whole days synching just 600GB of the 4.7TB between the two NAS, I am going to wait until the long SMART Test to complete on the one HGST drive and assess how much it was slowing down the rsync task. When all four disks were testing, throughput between the two was down to 1MB/sec. Now with only one HGST testing, throughput is up to 6MB/sec. Something is slowing things down from the initial 30MB/sec the rsync job was getting from the first day.

El disco llegó muy bien. Muy bien empacado. Se ve muy bien físicamente. Lo único es que es ruidoso. Medianamente si se escribe una buena cantidad de datos llega a ser molesto. Lo probé con HD sentinel y con Crystal disk y esta perfecto. La velocidad de transferencia es muy buena.

One of my sons has quite a few games and his gaming hard drive was full. He got this hard drive for Christmas. We had to connect the new drive to the connector for the existing DVD-ROM in order to image the old drive to the new drive, which required some mental gymnastics, but we got it done. Drive is speedy and works well. This drive makes a slightly louder noise when the seek-heads are active compared to the previous hard drive, but my son doesn't seem to mind or notice. Very nice drive all in all.

This disk could not be intialized/formatted. I tried using three diffferent Windows computers, with the HD mounted internally or externally using a USB adapter. Using diskmgmt.msc, if the disk was recognized (which it was not always), initialization failed every time with "I/O error", or "request failed due to a fatal device hardware error". I should have read other reviews more carefully, this product was a waste of time. Given that other reviewers showed evidence that some of these drives were used, Amazon should not allow used junk to be sold as if it were new.

Great customer support. Good price and they cover warranty in-house.

Bought four for a NAS set up and have only had a couple of days. Confirmed each one was brand new using crystal disk info. Also ran a short test on each to confirm there were no errors. Installed and have been operational since. Some complained about the noise of these drives. While they are not the quietest I have used, I am not hearing anything absurdly loud or concerning. The sound is similar to the other drives I have used. For the money, these are the best out there by far!