Last updated at 27/10/2026 18:55:03
Seagate EXOS X18 18TB SATA SED 3.5IN 7200RPM HELIUM 512E/4K
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originally posted on bhphotovideo.com
Put four of these in a Synology RS1619xs+ and I get 42TB of useable space in RAID 5 with full 10 GbE download speeds and about 500 MB/s write speeds. I've written at least 70 TB over the course of 1,650 hours to the array so far and no hiccups or bad sectors. It of course takes a few years to find out how good these truly are but they are off to a great start. ST16000NM000J seems to be an updated version of Seagate's 16TB enterprise drives with a bit more sustained speed. I had some bad luck with the first generation of 12TB Ironwolf drives so I'm going to be sticking with Exos for the foreseeable future, plus they are actually less expensive in most cases.
originally posted on scan.co.uk
Exos X18 18TB, selected as a large reliable mass storage disk. Unfortunately it was DOA. Got in touch with Scan and the suport was very helpfull and arranged for the retun of the disk for replacement.Obviously there was dissapointment on DOA and having to wait a week to receive a replacement.The drive: A week later I received the tested replacement, and all has been well withthe disk. I have read reviews that say that enterprise drives can be noisy in comparison to normal desktop drives, and this was a potential concern however totally unfounded.So far excellent drive reads/writes are ~230-270MBs, and the drive really is very quiet and will be very likely to considerr these for the next NAS. So hopefully it will prove reliable for years to come.
originally posted on scan.co.uk
I've had a pair of these in my Desktop with Proxmox as a base system and pass-through [GPU] Windows for my daily driver, in a zfs mirror pool using a couple of old sata ssd's as a "special" mirror in the same pool as a cache ... sort of, for ... dunno ... 2 or 3 months maybe, now, and so far no issues. Just saying here - as a quick review thingy, as I saw some people weren't so lucky. Super expensive, but still fairly competitive in pricing relative to others, for what they promise and have so far, (early days), delivered. They are mechanical: they make some noise, but it's not,too bad and I quite like it lol. :) I do tend to use it for local back-up copies and bigger media files and the like ... the ssd's are set to store very small files to improve over-all ... MoreI've had a pair of these in my Desktop with Proxmox as a base system and pass-through [GPU] Windows for my daily driver, in a zfs mirror pool using a couple of old sata ssd's as a "special" mirror in the same pool as a cache ... sort of, for ... dunno ... 2 or 3 months maybe, now, and so far no issues. Just saying here - as a quick review thingy, as I saw some people weren't so lucky. Super expensive, but still fairly competitive in pricing relative to others, for what they promise and have so far, (early days), delivered. They are mechanical: they make some noise, but it's not,too bad and I quite like it lol. :) I do tend to use it for local back-up copies and bigger media files and the like ... the ssd's are set to store very small files to improve over-all performance, and I have a bunch of RAM I use with ZFS for deduping too; they're not active all the time - these drives. But they're not ... unpleasant, when they are active. Very pleased I bought them so far. Since buying tons of hard drives since the early 90's, I do they have seem to have become more reliable, over-all, with time. I possess, maybe about 40 ish working mechanical hard drives at the moment - probably all less than 10-years old I think (rotating some as offline storage), and I'd say over the last 5-years I've had more SSD failures than mechanical failures - although SSD's are getting better too.
| General | |
| Device Type | Hard drive - internal |
| Capacity | 18 TB |
| Hardware Encryption | Yes |
| Interface | SATA 6Gb/s |
Seagate EXOS X18 18TB SATA SED 3.5IN 7200RPM HELIUM 512E/4K
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Put four of these in a Synology RS1619xs+ and I get 42TB of useable space in RAID 5 with full 10 GbE download speeds and about 500 MB/s write speeds. I've written at least 70 TB over the course of 1,650 hours to the array so far and no hiccups or bad sectors. It of course takes a few years to find out how good these truly are but they are off to a great start. ST16000NM000J seems to be an updated version of Seagate's 16TB enterprise drives with a bit more sustained speed. I had some bad luck with the first generation of 12TB Ironwolf drives so I'm going to be sticking with Exos for the foreseeable future, plus they are actually less expensive in most cases.
Exos X18 18TB, selected as a large reliable mass storage disk. Unfortunately it was DOA. Got in touch with Scan and the suport was very helpfull and arranged for the retun of the disk for replacement.Obviously there was dissapointment on DOA and having to wait a week to receive a replacement.The drive: A week later I received the tested replacement, and all has been well withthe disk. I have read reviews that say that enterprise drives can be noisy in comparison to normal desktop drives, and this was a potential concern however totally unfounded.So far excellent drive reads/writes are ~230-270MBs, and the drive really is very quiet and will be very likely to considerr these for the next NAS. So hopefully it will prove reliable for years to come.
I've had a pair of these in my Desktop with Proxmox as a base system and pass-through [GPU] Windows for my daily driver, in a zfs mirror pool using a couple of old sata ssd's as a "special" mirror in the same pool as a cache ... sort of, for ... dunno ... 2 or 3 months maybe, now, and so far no issues. Just saying here - as a quick review thingy, as I saw some people weren't so lucky. Super expensive, but still fairly competitive in pricing relative to others, for what they promise and have so far, (early days), delivered. They are mechanical: they make some noise, but it's not,too bad and I quite like it lol. :) I do tend to use it for local back-up copies and bigger media files and the like ... the ssd's are set to store very small files to improve over-all ... MoreI've had a pair of these in my Desktop with Proxmox as a base system and pass-through [GPU] Windows for my daily driver, in a zfs mirror pool using a couple of old sata ssd's as a "special" mirror in the same pool as a cache ... sort of, for ... dunno ... 2 or 3 months maybe, now, and so far no issues. Just saying here - as a quick review thingy, as I saw some people weren't so lucky. Super expensive, but still fairly competitive in pricing relative to others, for what they promise and have so far, (early days), delivered. They are mechanical: they make some noise, but it's not,too bad and I quite like it lol. :) I do tend to use it for local back-up copies and bigger media files and the like ... the ssd's are set to store very small files to improve over-all performance, and I have a bunch of RAM I use with ZFS for deduping too; they're not active all the time - these drives. But they're not ... unpleasant, when they are active. Very pleased I bought them so far. Since buying tons of hard drives since the early 90's, I do they have seem to have become more reliable, over-all, with time. I possess, maybe about 40 ish working mechanical hard drives at the moment - probably all less than 10-years old I think (rotating some as offline storage), and I'd say over the last 5-years I've had more SSD failures than mechanical failures - although SSD's are getting better too.
Seems fast, plenty large. As an Enterprise drive it seems more tuned for performance than noise levels, with lots of chunky buzzing seek noises. . . though I quite like that. Not getting too warm in the small and quite poorly ventilated case I'm using. Naturally you can't review the most important thing - reliability - unless it either fails in a short time or lasts for a very long one. So far so good. Price as purchased (on offer at £320) was much better than the nearest 18GB NAS/Red drive at more like £460 at the time of purchase.
I bought the 16TB version of Seagate's top-end Exos (latest X18) series drive Model ST16000NMZ00J and have been using it for a few days now.The product was delivered in an unmarked cardboard box (OEM-style) with the drive inside sealed in an anti-static wrapper bag. The SMART data internal to the drive showed that it was brand new, and the Seagate warranty verification website (which does not work from behind a firewall) showed that it has a full warranty of 5 years (based on my drive's serial number). The performance matches the Seagate product manuals: ~270MiB/s for read and write (I have it in a backup server, so the I/O is mostly sequential). For a 7200rpm it is not too noisy. It is sitting in an open caddy on a desk and runs at 40-42 deg C internal temp when ... MoreI bought the 16TB version of Seagate's top-end Exos (latest X18) series drive Model ST16000NMZ00J and have been using it for a few days now.The product was delivered in an unmarked cardboard box (OEM-style) with the drive inside sealed in an anti-static wrapper bag. The SMART data internal to the drive showed that it was brand new, and the Seagate warranty verification website (which does not work from behind a firewall) showed that it has a full warranty of 5 years (based on my drive's serial number). The performance matches the Seagate product manuals: ~270MiB/s for read and write (I have it in a backup server, so the I/O is mostly sequential). For a 7200rpm it is not too noisy. It is sitting in an open caddy on a desk and runs at 40-42 deg C internal temp when active (without any cooling/fan, at ambient ~72 deg F).I am fully satisfied with the purchase, and the product (so far).
Installed this drive into a new Windows 11 media centre build to consolidate 3 older and smaller drives. Copied data from old drives, mostly videos, via a Sata III to USB 3.0 adapter, and speed was only limited by the read speed of the older drives at about 150 MB/s. Tested copying data from an SSD and achieved up to 277 MB/s write speed, fastest I've seen for a 3.5" hard drive and faster than some earlier WD Velociraptor drives. Playing videos on this drive is now flawless on a 55" 4k TV, and I will be getting another soon to consolidate more old drives. One of the best value drives around, with a cost per TB of less than £16 along with a 5 year warranty.
Used for a DS 1821+, its only been a week but they seem to working great. They are quieter then I was expecting. Also they run fairly cool and that was nice to see as well since our rooms tend to run a little warm. I have seen some people talk about seagate drives and a high failure rate but I have never had a problem with any that were from Thailand. I have 8 of the 18tb, 10 of the 10tb, 2 of the 16tb, and 7 of the 4tb that are older than i can remember and still keep running. All are enterprise class drives. Zero failures for all the above. All the above are from Seagate Thailand manufacturing. Seagate should take notice of this fact.
Bought 3 of these to put in a ZFS1 TrueNas setup about a month ago. Reasonable price for these, but these are actual RETAIL drives that give you the full 5 years of warranty directly from Seagate; you can buy the same one from Amazon for cheaper but those are OEM drives that are warrantied thru some 3rd party seller, which is not worth it in my book. These are running at warmish temps in my cramped box, but running nice and fast. Constant write speeds that max out my networks 1GB connection; and my Plex server feeds these to my networked Nvidia Shields even at uncompressed 4k video just fine. Overall, solid drives, and unfortunately time will tell if these have issues and are reliable, but thanks to them being Retail drives with 5yr warranties, I dont feel like I'm ... MoreBought 3 of these to put in a ZFS1 TrueNas setup about a month ago. Reasonable price for these, but these are actual RETAIL drives that give you the full 5 years of warranty directly from Seagate; you can buy the same one from Amazon for cheaper but those are OEM drives that are warrantied thru some 3rd party seller, which is not worth it in my book. These are running at warmish temps in my cramped box, but running nice and fast. Constant write speeds that max out my networks 1GB connection; and my Plex server feeds these to my networked Nvidia Shields even at uncompressed 4k video just fine. Overall, solid drives, and unfortunately time will tell if these have issues and are reliable, but thanks to them being Retail drives with 5yr warranties, I dont feel like I'm risking much!
I bought the hard drive, 2 weeks ago, the first one did not work out the box, just like one of the reviews stated earlier BUT, Scan quickly sent DPD to pick up the hard drive and within a week I was replaced with a brand new replacement.It's early days but its working like a charm, it can be a little noisy but its not enough to distract or irratate you when your doing your work. Like all hard drives, if your installing into a PC your going to lose a little bit. So I actually have access to 16.3TB.I would deffinetely buy another two at some point later, to replace my other drives. My trade is a Creative (graphics, animation, illustration, motion graphics) and sometimes as a hobby a beat maker. So as projects and files get bigger, I need a bigger hard drive, ... MoreI bought the hard drive, 2 weeks ago, the first one did not work out the box, just like one of the reviews stated earlier BUT, Scan quickly sent DPD to pick up the hard drive and within a week I was replaced with a brand new replacement.It's early days but its working like a charm, it can be a little noisy but its not enough to distract or irratate you when your doing your work. Like all hard drives, if your installing into a PC your going to lose a little bit. So I actually have access to 16.3TB.I would deffinetely buy another two at some point later, to replace my other drives. My trade is a Creative (graphics, animation, illustration, motion graphics) and sometimes as a hobby a beat maker. So as projects and files get bigger, I need a bigger hard drive, especially for storing reference be it images, footage and the work files.
I selected this drive as the 16TB seemed less reliable in tests and is barely cheaper. Moreover, I wanted the ability to replace on failure. That is where the 5 year warranty comes in. Some third party vendors resell OEM drives that lack this warranty or US origin sales. My experience is that of they fail it is the first 3 months. Once you pass that hurdle, you are typically fine. Please ensure you back up your files.One word of caution, duplicating a smaller drive and enlarging the image size may bump you into partition size limitations in Windows, resulting in unused disk space. That is fixible with third party software, but cumbersome and introduces the risk of data corruption. Instead format this disk and copy the content.I have multiple brands of harddisk ... MoreI selected this drive as the 16TB seemed less reliable in tests and is barely cheaper. Moreover, I wanted the ability to replace on failure. That is where the 5 year warranty comes in. Some third party vendors resell OEM drives that lack this warranty or US origin sales. My experience is that of they fail it is the first 3 months. Once you pass that hurdle, you are typically fine. Please ensure you back up your files.One word of caution, duplicating a smaller drive and enlarging the image size may bump you into partition size limitations in Windows, resulting in unused disk space. That is fixible with third party software, but cumbersome and introduces the risk of data corruption. Instead format this disk and copy the content.I have multiple brands of harddisk drives, but have been moving back to Seagate as a result of publishred rialibility results. So far 62TB of Seagate storage without problems.
| General | |
| Device Type | Hard drive - internal |
| Capacity | 18 TB |
| Hardware Encryption | Yes |
| Interface | SATA 6Gb/s |
Exos X Series Hard Drives The most scalable drives in the datasphere, Exos X series hard drives integrate the latest technology in support of a secure and reliable cloud data centre. Scalable. Responsive. Innovative Designed to handle the most rigorous workloads, the Seagate Exos X series enterprise class drives are perfect, high-reliability solutions for servers, storage systems, and business-centric NAS systems. Whatever your applications, there’s an Exos drive for it. Exos X18 Designed for maximum storage capacity and the highest rack-space efficiency, delivering up to 18 TB capacity.
Exos X Series Hard Drives The most scalable drives in the datasphere, Exos X series hard drives integrate the latest technology in support of a secure and reliable cloud data centre. Scalable. Responsive. Innovative Designed to handle the most rigorous workloads, the Seagate Exos X series enterprise class drives are perfect, high-reliability solutions for servers, storage systems, and business-centric NAS systems. Whatever your applications, there’s an Exos drive for it. Exos X18 Designed for maximum storage capacity and the highest rack-space efficiency, delivering up to 18 TB capacity.
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last seen 27 Oct 2026
The lowest price we last saw for Seagate Exos X18 18TB SATA III 3.5" 7200 RPM HDD (ST18000NM001J) was $2,948.16 at Amazon.com.au (last seen 27 Oct 2026). Prices may have changed since.
The all-time low we recorded was $579.95 on 19 Nov 2024.
Prices last updated 27 Oct 2026.
Seagate Exos X18 18TB SATA III 3.5" 7200 RPM HDD (ST18000NM001J)
Exos X Series Hard Drives The most scalable drives in the datasphere, Exos X series hard drives integrate the latest technology in support of a secure and reliable cloud data centre. Scalable. Responsive. Innovative Designed to handle the most rigorous workloads, the Seagate Exos X series enterprise class drives are perfect, high-reliability solutions for servers, storage systems, and business-centric NAS systems. Whatever your applications, there’s an Exos drive for it. Exos X18 Designed for maximum storage capacity and the highest rack-space efficiency, delivering up to 18 TB capacity.
Exos X Series Hard Drives The most scalable drives in the datasphere, Exos X series hard drives integrate the latest technology in support of a secure and reliable cloud data centre. Scalable. Responsive. Innovative Designed to handle the most rigorous workloads, the Seagate Exos X series enterprise class drives are perfect, high-reliability solutions for servers, storage systems, and business-centric NAS systems. Whatever your applications, there’s an Exos drive for it. Exos X18 Designed for maximum storage capacity and the highest rack-space efficiency, delivering up to 18 TB capacity.
