Seagate (Renewed) Exos X22 20TB SATA 6Gb/s 7200RPM 3.5-inch Enterprise HDD (ST20000NM004E)

I am pretty paranoid about second-hand core computer parts (graphics cards, HDD, SDD, and CPUs). The fact that these refurbished units have a 2-year warranty on them helped ease my mind. I purchased 3 20TB drives. 1 of the drives made an unnerving clicking noise while idle. I sent that one back and quickly got a replacement. All 3 of my drives are healthy and shipped with less than 30 hours of run time on each drive. They now happily hum away in my NASI am not sure what would constitute a noisy drive. I am used to the muted clunking noise of HDDs and have never ran enough at the same time, under load, for the noise they make to be offensive. The drives work well in my DS1522+ and I am having no problems with them. The drives now have 800 hours under their belt and are performing just fine.

The seller was incredibly helpful and provided tracking information and was shipped the same day! Received this HDD the following day early morning and was very well packaged and arrived without any damages! I installed this HDD to my Synology DS923+, went through the process of formatting and creating a storage pool, as this was the first HDD to use on this new NAS. The Seagate Exos X22 20TB SATA 6Gb/s 7200RPM 3.5-inch Enterprise HDD - ST20000NM004E (Renewed) HDD Drive contained an available storage capacity of 18616GB or 18.616TB of available storage, according to the Storage Creation Wizard of Synology. I performed a S.M.A.R.T test, took about three days to complete and my Synology NAS didn't detect any issues with this drive. I performed a stress test and transferred significant large sized files/videos over to my NAS using this HDD, and it handled everything very well! This HDD can handle read/write speeds of 25GB large filed videos. I recommend transferring large files to your NAS by hardwiring it directly to your PC, instead of transferring over WiFI to get better transfer results. I will be adding large SSD cache NVMe M.2 drives to significantly increase read/write speeds on my NAS. Noise level on this HDD is not to loud, but you can definitely hear the click/clack sounds when there's activity on the HDD. It's not loud for me, as I store my NAS on my server cabinet of my home office. This is a great purchase and highly recommend it from this awesome seller!

I am exceptionally happy with these drives. They are fast. They are going strong. I have had this type of drive before just not this size. Not really much to say. I put them in my server for large space storage. No hiccups or problems as of yet. I don't anticipate on any either.

I have bought about 20 of these over the years and they have been solid purchases. Haven't had one failed yet. I just wish there were more of these in stock.

Writing this review after I have had 3 in this series (a 14tb, and two 20tb) be dead on arrival. I was able to return two of them, and had to use Seagate customer service for replacement of one, since it was outside of the return window. I will say, several of these drives have worked great. But with recent new and renewed drives failing immediately, when a drive’s entire purpose is to secure your data, I have to give the drive the lowest possible rating. I believe there is a QC issue at Seagate, and I sincerely hope they figure it out and will listen to customers.

I bought two of these renewed disk and have been using for 4 months now. So far I didn't have any trouble. One of the disk makes a bit more noise compared to another but I guess that is just the nature of the business here.

It has been a while since I installed it onto my Synology Nas and it has been performing great. I'm waiting until I have more cash to buy 8 more. That's how much I like these.

Works great