Seagate IronWolf Pro, 20 TB, Enterprise NAS Internal HDD –CMR 3.5 Inch, SATA 6 Gb/s, 7,200 RPM, 256 MB Cache for RAID Network Attached Storage (ST20000NT001)

got the used / mint condition by amazon, irowolf pro 8TB kinda wish the package said fragile or something but that;s the risk you take and amazon is good at returns. Here is what I got: Power-On Hours: Only 54 hours (practically new!) Power Cycles: 5 (barely used) Bad Sectors: 0 reallocated, 0 pending, 0 uncorrectable Errors: 0 read errors, 0 CRC errors Temperature: 33°C (healthy) enough said

When you're building or upgrading a NAS system, drive reliability is paramount. The Seagate IronWolf Pro is designed specifically for enterprise NAS environments, and it delivers the performance and durability you need for always-on storage. This is a serious drive for serious storage needs. The 8TB capacity provides substantial storage space for a single drive. Whether you're storing large media files, running virtual machines, or handling heavy data workloads, having 8TB per drive means you can build high-capacity arrays without needing excessive drive bays. The capacity-to-cost ratio is excellent for this performance tier. CMR (Conventional Magnetic Recording) technology is a key advantage. Unlike SMR drives that can have performance issues with certain workloads, CMR provides consistent performance for NAS applications. Write operations don't bog down, and the drive handles simultaneous read-write operations smoothly. That consistent performance is crucial for multi-user environments. The 7200 RPM spindle speed delivers solid performance. Data access is quick, transfer rates are strong, and the drive handles demanding workloads without bottlenecking. Whether you're streaming multiple 4K video files or running database operations, the performance keeps up with what you're asking it to do. The 256MB cache is generous and helps with performance optimization. Frequently accessed data stays in cache for faster retrieval, and the drive can manage multiple operations more efficiently. That large cache contributes to the smooth, responsive performance you experience during actual use. SATA 6Gb/s interface provides the bandwidth needed for high-performance NAS applications. The drive can saturate the interface when needed, delivering the throughput that modern NAS workloads demand. Transfer speeds are consistently strong across different file types and access patterns. Build quality and reliability engineering are where the IronWolf Pro designation matters. These drives are rated for higher workload limits than consumer drives, with specifications that support 24/7 operation. The mean time between failures is rated at 1.2 million hours, indicating enterprise-grade reliability expectations. Vibration tolerance is engineered for multi-drive environments. NAS enclosures typically house multiple drives running simultaneously, which creates vibration. The IronWolf Pro is designed to maintain performance and reliability even with the vibration levels present in populated NAS chassis. That tolerance prevents performance degradation and premature failure. Noise and heat levels are reasonable for a 7200 RPM enterprise drive. It's not silent – there's the characteristic spinning platter sound – but it's not excessively loud either. Heat output is manageable with proper NAS ventilation. These drives operate within acceptable temperature ranges in well-ventilated enclosures. The rotational vibration sensors actively monitor and correct for vibration in real-time. This technology helps maintain performance and positioning accuracy even when multiple drives are working simultaneously in the same enclosure. It's one of the features that distinguishes NAS-specific drives from desktop models. Data recovery services are included for three years, which provides additional peace of mind. If a drive does fail and you need professional data recovery, having that service available can be invaluable. While you should always have backups, having recovery service as a safety net is reassuring. Power consumption is optimized for NAS environments. The drive balances performance with power efficiency, which matters when you're running multiple drives 24/7. Lower power consumption means lower operating costs and less heat generation in your NAS enclosure. Compatibility with major NAS platforms is excellent. Whether you're running Synology, QNAP, or another NAS operating system, these drives are recognized and work without issues. Seagate provides compatibility lists and optimization guides for popular NAS brands. Performance consistency over time remains strong. These drives don't show significant performance degradation as they age. The combination of quality components and robust firmware keeps them running reliably throughout their service life. Warranty coverage at five years demonstrates Seagate's confidence in these drives. That long warranty period provides protection for a substantial portion of the drive's expected lifespan. Having that coverage matters when you're investing in enterprise-grade storage. For anyone building or upgrading a NAS system and needing reliable, high-performance drives, the IronWolf Pro is an excellent choice. It's engineered specifically for NAS workloads, delivers consistent performance, and provides the reliability needed for always-on storage systems. Whether you're setting up a home media server or deploying small business storage, these drives give you enterprise-level reliability at a reasonable price point.

Don't buy. That's the tl;dr. Unless you hate your data and enjoy not getting warranty service. Bought four of these. Two were DOA. Two out of four brand new drives simply don't spin up. That's ridiculous on its own. The seller refused to replace them, despite having more in stock, and would only issue a refund and sell me two more for a 50% higher price. That's pretty ridiculous, too. So I went to seagate "support". Their warranty site was down, try back later. Well I did. It stayed down. It's still down weeks later. I finally called support. Waited on hold for 30 minutes. Finally got someone who directed me to a different page by giving me a direct URL. Said to click on a button that wasn't there. Then told me that unless I accepted all cookies, I wouldn't be shown the button. Pretty sure that violates various laws around the world. Finally got to the RMA page, went through all the hoops, and they would only send me REFURB drives to replace brand new drives that were DOA. No. Absolutely not. So I ended up returning them to the seller who refused to replace them for a refund. He'll be getting an appropriate review, too. In short, quality control is clearly non-existent if my small sample of 4 drives with a 50% DOA rate is any indication. I certainly wouldn't expect them to last in a NAS. And when a drive failed, I certainly wouldn't expect to get a replacement in time to rebuild my raid before another failed. These are trash. Better to go with a Western Digital, which is what I did. Capacity is slightly smaller, 26tb instead of 28, but I know they'll work and I know if I have problems I'll get actual support. I've worked in datacenters that go though large volumes of drives. All manufacturers have failures, and they go through ups and downs over the years, but seagate was always pretty bad, and they just keep getting worse with time. Never buying seagate again unless we need a new puck for datacenter hockey.

Really happy I bought this for Plex—it's fast, reliable, and easy to use, perfectly compatible with the Ugreen DXP 4800 Plus NAS. No issues so far. It does get somewhat warm, but that's to be expected, and it fits perfectly in the NAS drive bays.

This 12TB IronWolf Pro is a beast. I’ve been using it in a RAID setup, and the performance is night and day compared to standard drives. The 7,200 RPM speed and 256MB cache keep data transfers fast and consistent, which is exactly what you need for a busy NAS. It runs surprisingly quiet for an enterprise-grade drive, and the CMR technology gives me peace of mind for long-term reliability and heavy workloads. If you're looking to upgrade your storage or build a serious home server, this is the gold standard. Highly recommend for any NAS user!

Ich habe die Seagate IronWolf PRO 18TB bereits vor 2 Jahren gekauft (neu und direkt von Amazon) und bin bisher rundum zufrieden. Die Inbetriebnahme verlief problemlos, die Festplatte wurde sofort erkannt und läuft seitdem absolut stabil. Die Übertragungsraten sind hervorragend mit bis zu 270 MB/s – große Datenmengen werden schnell und zuverlässig verschoben. Auch bei mehreren gleichzeitigen Zugriffen bleibt die Performance konstant hoch. Es bleibt eine Festplatte die hörbar ist, aber im Vergleich zu Festplatten von WD und anderen Herstellern, gerade auch in diesem Segement, empfinde ich sie als angenehm leise. Selbst im Dauerbetrieb stören keine ungewöhnlichen Geräusche. Wer viel Speicherplatz sucht macht mit der IronWolf PRO nichts falsch. Ich kann sie immer noch empfehlen.

Got my drives verified from segate, no problem

i bought the new Seagate Ironworlf Pro ST18000NTZ01. Not only Impressive specs on paper but in real too. Zero vibration and fast. Will see how durability goes in the future and i will update my review if needed. Very happy so far

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.

Like all hdd’s, advertised & usable space aren’t the same. So you’ll get 20tb of actual space