Seagate IronWolf, 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)

I am giving for stars mostly for the support I got from Amazon customer service regarding my order. I bought two 12TB drives on the 23rd nov during the sale period. I got them on the 15th Dec. I was traveling during that time, but when I got home, I installed them right away in my brand new NAS. Unfortunately only one worked without a problem. The other one was spinning but was not loading and reading nothing. I tried to put in intro a PC and also a 3.5 sata adapter and connected to a laptop. The same problem-it wasn't readable. Luckly amazon customer service undarstood the problem and gave me a refund. I bought a WD drives this time.

two our four HDDs that I received had controller-level failure. I inserted them in my brand-new QNAP and I received I/O error. tried many solutions but the error is there and I had to return the two of them. maybe the reason is that it was shipped from US to UAE using DHL post. but anyhow, I faced a 50% failure

Ürün beş ay sonra arıza yaptı, satıcı ile iletişime geçtim satıcı ürünü geri aldı 20 iş günü içerisinde yenisini gönderdi, güvenilir ve dürüst bir satıcı çok teşekkür ediyorum..

Excellent

I bought 4 of these, 3 were working and 1 spoilt.. i almost returned it but found out i could send to Seagate for RMA to get a replacement.. so i did that as i bought it at a super price.. returning it would mean i'd have to buy another at a much higher price. Overall still happy since i can get a new one from Seagate as they have international warranty. Update 18May'25: i sent in the 12TB to Seagate for RMA, and they sent me a replacement 18TB.. how awesome is that.. :-)

I run four of these in a four-bay Synology in RAID 5, with a Samsung NVMe as read cache. The array is on 24/7 with no spin-down, handling a Plex media server, backups, and surveillance recording. That is a genuinely constant workload, not a drive that idles most of the day. These replaced the 4TB IronWolf Pros I had been running. The jump in capacity was the reason, but they are also noticeably faster, and I would buy them again without hesitating. All four report Healthy with no errors. Temperatures are worth knowing about if you are filling a four-bay enclosure: mine sit between 47 and 49°C under normal operation. That is inside Seagate's rated range and I have had no thermal issues, but if you are packing four 7200 RPM drives into a compact NAS, expect them to run warm rather than cool. Airflow in your enclosure matters more than it would with one or two drives. On noise: these are audible. When the platters are working I can clearly hear them from my desk about eight feet away. It is not a whine or a grinding sound, just the normal seek noise of enterprise-class 7200 RPM drives, but do not expect a silent NAS. If your unit lives in a bedroom or a quiet office, put it in a closet or accept the background noise. This is the single thing most listings will not tell you and the thing most likely to surprise a first-time NAS builder.

I use this in a 5-bay NAS that has been running for well over a year without any problems. No heat issues. I use an Uninterruptible Power Supply as we have occasional power outages and the UPS prevent the extremely long recovery times if the NAS abruptly loses power. Seagate is my preferred brand that I have used in PC's as well.