Seagate Exos Enterprise Hard Drives

Every Exos generation — hyperscale nearline X-series to 15K mission-critical E-series

About Exos Enterprise Drives

Exos is Seagate's data-center flagship — 2.5 million-hour MTBF, 550 TB/year workload rating, and the drive family behind most of the world's hyperscale storage. We stock the full Exos range across every generation, searchable by ST part number, in both SATA (6Gb/s) and SAS (12Gb/s) interfaces.

Exos X-Series — Nearline Capacity

7,200 RPM 3.5-inch helium and air drives from Exos X10 (10 TB) through X16, X18, X20, X22 and X24 (24 TB) — part numbers ST10000NM through ST24000NM. 512e/4Kn formats, optional SED encryption, dual-port SAS variants for JBOD and array duty.

Exos E-Series — Performance & Legacy Arrays

The workhorses OEMs built arrays around: Exos 7E8 and 7E10 (4–10 TB nearline, our deepest E-series stock), 15E900 (15K RPM 300–900 GB SFF) and 10E2400 (10K 2.4 TB with enhanced cache). When an array vendor quotes months of lead time on an EOL drive, this is where you find it.

Need a specific format — 512e vs 4Kn, SED, or dual-port SAS? Every listing carries the exact ST number and format. Ask for a bulk quote on 10+ drives with matched firmware.

Featured Exos Enterprise Drives Products

Browse all 501 Exos Enterprise Drives SKUs.

Most-searched Exos Enterprise Drives part numbers

The Seagate Exos drives that US buyers look up most often on Google, from our own Search Console data. Every part listed is priced, photographed and in stock as of 15 October 2026.

Part number	Description	Price
ST20000NM000D	Seagate ST20000NM000D Exos X20 Series 20TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-Inch Hard Drive	$590.40
ST18000NM005J	Seagate ST18000NM005J Exos X18 18TB 7200RPM 12Gb/s SAS 256MB Cache 512e/4kn 3.5-Inch Hard Drive	$376.00
1XK203-006	Seagate 1XK203-006 Exos 10E2400 2.4TB 12Gb/s SAS 512e 2.5-Inch Hard Drive	$601.60
1XK203-004	Seagate 1XK203-004 Exos 10E2400 2.4TB 12Gb/s SAS 512e 2.5-Inch Hard Drive	$601.60
ST12000NM001J	Seagate ST12000NM001J ST12000NM001J - Seagate Exos X18 12 TB SATA 6Gb/s Hard Drive	$548.00
ST4000NM019B	Seagate ST4000NM019B Exos 7E10 4TB 7200RPM 12Gb/s SAS 512n ISE 3.5-Inch Hard Drive (OEM)	$206.40
ST8000NM024B	Seagate ST8000NM024B Exos 7E10 8TB 7200RPM 12Gb/s SAS 256MB Cache 3.5-Inch Hard Drive With Tray For PowerVault Storage System (OEM)	$208.00
ST2000NM000B	Seagate ST2000NM000B Exos 7E10 2TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-Inch Hard Drive	$257.60
ST10000NM002G	Seagate ST10000NM002G Exos X16 10TB 7200RPM 12Gb/s SAS 256MB Cache 512e/4kn 3.5-Inch Hard Drive	$254.40
ST16000NM002H	Seagate ST16000NM002H Exos X24 16TB 7200RPM 6Gb/s SATA 512MB Cache 512e ISE 3.5-Inch Hard Drive	$606.40
ST12000NM0158	Seagate ST12000NM0158 Exos X14 12TB 7200RPM 12Gb/s SAS 256MB Cache 3.5-Inch Hard Drive With Tray (OEM)	$304.00
ST16000NM010G	Seagate ST16000NM010G Exos X16 16TB 7200RPM 12Gb/s SAS 256MB Cache 512e Enterprise 3.5-Inch Hard Drive (OEM)	$326.40

Frequently Asked Questions

What is the difference between Seagate Exos 7E8 and 7E10?

Both are 7,200 RPM nearline enterprise drives. The 7E8 tops out at 8 TB (ST8000NM...) with 256 MB cache; the 7E10 extends to 10 TB with updated platters and firmware. Both offer SATA 6Gb/s and SAS 12Gb/s variants, 512e or 4Kn sector formats, and the same 2.5M-hour MTBF rating. For array rebuilds, match the exact ST part number of the existing members.

Exos vs IronWolf Pro — which for a NAS?

IronWolf Pro is designed for 8-24 bay NAS enclosures with rotational-vibration sensors and 300 TB/yr workload rating. Exos is rated for 550 TB/yr and unlimited bay counts, at a similar or lower price per TB. For heavy-duty or business NAS use, Exos is usually the better buy; IronWolf Pro runs slightly quieter and cooler for office environments.

Can I mix 512e and 4Kn Exos drives in the same RAID array?

No — all members of a RAID virtual disk must share the same logical sector format. 512e drives emulate 512-byte sectors for legacy compatibility; 4Kn drives expose native 4K sectors and require OS/controller support (UEFI boot, modern HBAs). Check the existing array format before ordering; the ST part number suffix distinguishes them.

Is a used or refurbished Exos drive reliable?

Enterprise drives are engineered for 5+ years of 24/7 duty. Our refurbished Exos drives are wiped, surface-tested, SMART-verified with hours reported, and covered by our warranty. For RAID arrays we recommend consistent condition across members — we can supply matched sets on request.