SeagateIronWolf, Pro 12TB, Enterprise Internal NAS HDD – CMR 3.5 Inch, SATA 6GB/s, 7,200 RPM, 256 MB Cache for RAID NAS - Frustration Free Packaging (ST12000NTZ01)

Have 2 of these 4TB drives in a Synology DS720 NAS running as mirrored backup. Been running strong almost 5 years! No issues and solid performer to date.

I have used Seagate for at least 30 years and have maybe had 2 problems, which Seagate corrected fast and professionally as always. I have always been satisfied with their products and great customer service. I have 4 operating computers which each has 6 HD and have worked very well for several years. I also have "2" 8 HD servers and 2 "4" HD servers I use for video like movies and TV series and they are also working very well for years. All Seagate. In my life working with computers (36 years) I've always used Seagate and never received any promotions, cut price or free hard drives. Needless to say Seagate makes an outstanding product and customer service that will last a very long. That has been my experience, I truly believe that you who decide to purchase Seagate will be making a wise decision and have the same great experience I have had for years. Seagate, a great product.Gary

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I have two of these still going strong in my Raid array Time Machine backup after 6 six years. Would buy again.

I have been running this drive 24/7 since June of 2022. The drive still works. It's fast enough for my purposes (home NAS).

I rarely write a review but decided to. First, I am old, like dirt. Retired as a system, network, cyber engineer a long, long time ago. How old? I started with Assembly language and the OSI model. LOL.I still enjoy playing with computer stuff though.I don't use these drives in a NAS but do use the IronWolf drives for my media server (recently rebuilt on a mini pc) from the old tower which I keep as a backup. I really like these drives. They can run 24x7 or on/off, depending on the system. I use them as my backup media across my desktops, laptops and servers via 6e wifi and also direct attached. They hang off external USB to SCSI enclosures and run like a charm.Well, so much for the background. The first three I bought in 2021. The next in 2022, another in 2023 as a replacement and now an IronWolf Pro just ordered as another replacement (7200RPM!) a few minutes ago.Real world experience is simply this. As of today, the last one bought in 2021 is showing signs of file corruption. Nothing major, but definitely getting some bad blocks. I scanned the drive and repaired it, but in my world, it is either perfect or replaced. Sure, they could probably go for another year, but I don't want the hassle. And for a few extra details. The drives did all not get the same usage. Some have one year, other three years. The one-year usage ones are running great, the three-year ones are showing errors.My conclusion? The IronWolf drives are great for the money. Whether in an on/off environment or 24x7, they give a solid three years of great performance and reliability.I decided to buy the IronWolf Pro 4TB running at 7200RPM for a little extra spin for those Ultra 4K movies. It was only 20 dollars more.They get my vote, just plan a three-year endurance unless you are running a NAS. Then it is not that big a deal. Enjoy!PS: I was going to buy SSD's, but with the crazy price increases since the first of the year, I'll stick with HDD's. They work great for my purposes.

Arrived well protected, a day earlier than predicted and handed over by a friendly driver spreading smiles on a gloomy weather day. The Seagate drive is as expected - thanks!

I held off on submitting a review until I had a chance to put some time and usage on this hard drive. I ordered 3 of IronWolf 4TB hard drives in January 2021 and use them in a RAID 5 configuration on an Asustor AS4004T NAS. They have been in use for about 13 months. It is used in a home office setting with me as the sole user. I also use the Asustor Surveillance Center app to record 24/7 security camera footage to these hard drives. After 13 months of use, the drives have performed with no issues.The drives run quiet and cool, but keep in mind that this is due to the disks only spinning at 5900 RPM. Consequently, you'll need to manage your expectations on the read and write speeds to these disks, even if they are in a RAID configuration.I did check the serial numbers on the drives that I received on the Seagate website to confirm if these drives are covered by Seagate, and my drives had warranty periods as follows:Drive #1, Date of Manufacture: 3DEC2020; Warranty valid until 28MAR2024Drive #2: Date of Manufacture: 2DEC2020; Warranty valid until 28MAR2024Drive #3: Date of Manufacture: 2DEC2020; Warranty valid until 28MAR2024Considering that I bought these drives in January 2021, these drives are practically fresh off the manufacturing line and haven't stayed in Amazon's inventory very long. However, those warranty periods don't appear to be in line with Seagate's claim of a 5-year warranty for these drives. Just wanted to point this out for those who are expecting a 5-year warranty on this particular model.Overall, there have been no issues with these drives. Expectations just need to be managed, considering that these disks only spin at 5900 RPM. Otherwise, they have performed reliably under the workload conditions I described.