Delivering maximum storage capacity with the highest rack-space efficiency. Scalable. Responsive. Innovative. Designed with the highest rack-space efficiency and protected with Seagate Secure, Exos X20 offers extreme market-leading capacity, earning customer confidence by delivering trusted peace of mind. Superior Reliability Enterprise-class drives with a 550 TB/year workload rating and 2.5M-hr MTBF to meet the most demanding storage requirements. Customisation Power Options PowerChoice and PowerBalance for optimised power consumption when in use and idle — customisable to fit your needs. Amazing Performance Advanced write caching coupled with up to 285 MB/s data transfer rates provides a boost in performance without compromising on capacity. Advanced Data Security Password protection and AES-256 hardware encryption with Seagate Secure — for drives you can depend on.
Delivering maximum storage capacity with the highest rack-space efficiency. Scalable. Responsive. Innovative. Designed with the highest rack-space efficiency and protected with Seagate Secure, Exos X20 offers extreme market-leading capacity, earning customer confidence by delivering trusted peace of mind. Superior Reliability Enterprise-class drives with a 550 TB/year workload rating and 2.5M-hr MTBF to meet the most demanding storage requirements. Customisation Power Options PowerChoice and PowerBalance for optimised power consumption when in use and idle — customisable to fit your needs. Amazing Performance Advanced write caching coupled with up to 285 MB/s data transfer rates provides a boost in performance without compromising on capacity. Advanced Data Security Password protection and AES-256 hardware encryption with Seagate Secure — for drives you can depend on.
Delivering maximum storage capacity with the highest rack-space efficiency. Scalable. Responsive. Innovative. Designed with the highest rack-space efficiency and protected with Seagate Secure, Exos X20 offers extreme market-leading capacity, earning customer confidence by delivering trusted peace of mind. Superior Reliability Enterprise-class drives with a 550 TB/year workload rating and 2.5M-hr MTBF to meet the most demanding storage requirements. Customisation Power Options PowerChoice and PowerBalance for optimised power consumption when in use and idle — customisable to fit your needs. Amazing Performance Advanced write caching coupled with up to 285 MB/s data transfer rates provides a boost in performance without compromising on capacity. Advanced Data Security Password protection and AES-256 hardware encryption with Seagate Secure — for drives you can depend on.
Delivering maximum storage capacity with the highest rack-space efficiency. Scalable. Responsive. Innovative. Designed with the highest rack-space efficiency and protected with Seagate Secure, Exos X20 offers extreme market-leading capacity, earning customer confidence by delivering trusted peace of mind. Superior Reliability Enterprise-class drives with a 550 TB/year workload rating and 2.5M-hr MTBF to meet the most demanding storage requirements. Customisation Power Options PowerChoice and PowerBalance for optimised power consumption when in use and idle — customisable to fit your needs. Amazing Performance Advanced write caching coupled with up to 285 MB/s data transfer rates provides a boost in performance without compromising on capacity. Advanced Data Security Password protection and AES-256 hardware encryption with Seagate Secure — for drives you can depend on.
Last updated at 07/25/2026 06:00:01
Seagate Technology Exos X20, 20TB, 3.5-Inch SATA Hard Drive at 6GB/s, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Cache (
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!
"Seagate 20TB Exos ST20000NM007D X20 3.5"512e/4Kn SATA3 Enterprise Hard Drive"
Delivery $12.99
Seagate Enterprise ST20000NM007D internal hard drive 3.5" 20000 GB Serial ATA III
Free delivery
Seagate ST20000NM000D-20PK Exos X20 20TB Hard Drive
Free delivery between Mon – Fri
originally posted on scan.co.uk
I purchased four of these drives to upgrade an existing Synology NAS box. I was previously using 4 x 16Tb Seagate EXOS drives and decided to upgrade to the 20Tb versions. The new drives worked perfectly and the 918+ NAS unit rebuilt the entire array in about 2 days which, given the size, was very impressive. These drives, despite their greater capacity, seem to run cooler than the 16Tb units they replaced. In addition, the new drives spin-up faster from power-save and operate more quietly. An excellent upgrade. The drives supplied were official UK stock and their labels show Seagate UK's address, so these are not grey market units.
| General | |
| Device Type | Hard drive - internal |
| Capacity | 20 TB |
| Interface | SATA 6Gb/s |
| Buffer Size | 256 MB |
Seagate Technology Exos X20, 20TB, 3.5-Inch SATA Hard Drive at 6GB/s, 7,200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Cache (
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!
"Seagate 20TB Exos ST20000NM007D X20 3.5"512e/4Kn SATA3 Enterprise Hard Drive"
Delivery $12.99
Seagate Enterprise ST20000NM007D internal hard drive 3.5" 20000 GB Serial ATA III
Free delivery
Seagate ST20000NM000D-20PK Exos X20 20TB Hard Drive
Free delivery between Mon – Fri
I purchased four of these drives to upgrade an existing Synology NAS box. I was previously using 4 x 16Tb Seagate EXOS drives and decided to upgrade to the 20Tb versions. The new drives worked perfectly and the 918+ NAS unit rebuilt the entire array in about 2 days which, given the size, was very impressive. These drives, despite their greater capacity, seem to run cooler than the 16Tb units they replaced. In addition, the new drives spin-up faster from power-save and operate more quietly. An excellent upgrade. The drives supplied were official UK stock and their labels show Seagate UK's address, so these are not grey market units.
| General | |
| Device Type | Hard drive - internal |
| Capacity | 20 TB |
| Interface | SATA 6Gb/s |
| Buffer Size | 256 MB |
