ST16000NM001G: Seagate Exos X16 16TB 7200 RPM SATA 6Gb/s 512e/4Kn 3.5-Inch Enterprise Hard Drive
Also listed as: 2KK103-002, Exos X16 16TB SATA, 2KK103-001 · made by Seagate
The Seagate Exos X16 16TB (model ST16000NM001G) is an enterprise helium-sealed hard drive built for hyperscale cloud data centers, scale-out NAS enclosures, and massive backup repositories. Operating at 7200 RPM with a 256MB cache, it delivers sustained data rates up to 261 MB/s with a 2.5 million hour MTBF rating. When buying used Exos X16 drives, verify SMART attributes 5 (retired sectors) and 187 (reported uncorrectable errors), check helium seal status, and confirm sector format (512e vs native 4Kn).
Specifications
| Part number | ST16000NM001G |
|---|---|
| Brand | Seagate |
| Made by | Seagate |
| Type | Hard drives |
| Other numbers | 2KK103-002, Exos X16 16TB SATA, 2KK103-001 |
| Status | current |
| Capacity (GB) | 16,000 |
| Interface | SATA 6Gb/s |
| Form factor | LFF 3.5in |
| Speed | 7200 rpm |
| Cache (GB) | 0.256 |
| Generation fit | Universal 3.5-inch enterprise server and storage drive bays |
About the ST16000NM001G
ST16000NM001G is Seagate's enterprise 16TB 7200 RPM SATA 6Gb/s 3.5-inch hard drive in the Exos X16 family. Built with a 9-disk helium-sealed design using Conventional Magnetic Recording (CMR), it delivers sustained transfer rates up to 261 MB/s with a 2.5 million hour MTBF rating. It sits in Seagate's flagship enterprise cloud storage tier, replacing older 12TB and 14TB models while preceding the Exos X18.
Compatibility
Fits standard 3.5-inch large-form-factor drive bays across enterprise servers and SAN/NAS storage enclosures from Dell, HPE, Lenovo, and Supermicro. Interfaces with SATA 6Gb/s ports, SAS/SATA HBAs, and hardware RAID controllers. It does not fit 2.5-inch drive cages. FastFormat technology supports both 512e and native 4Kn sector formatting.
How to identify a genuine unit
Genuine retail units bear a Seagate Exos X16 label displaying model ST16000NM001G, part number 2KK103-002, 16TB capacity, and SATA 6Gb/s notation. In system BIOS and smartctl, the drive reports as ST16000NM001G with Seagate factory firmware. OEM variants (such as Dell 400-BIPW) carry Dell firmware prefixes.
Buying used
Query smartctl -a to check attribute 5 (reallocated sectors), attribute 187 (reported uncorrectable errors), and attribute 22 (helium status). Ensure the drive has standard 512e or 4Kn formatting and that the 3.5-inch mounting screw threads are intact.
Reference prices (last 14 days, updated 2026-10-27)
New: USD 265 (1 sighting, Oct 2026)
Used: USD 160 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | new | USD 265 | 2026-10-27 | |
| ebay.com | used | USD 160 | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
Equivalent part numbers
- Dell 400-BIPW Dell 16TB 7.2K SATA 3.5in Exos X16 HDD
FAQ
What recording method is used in Exos X16?
Conventional Magnetic Recording (CMR).
What is the annual workload rating?
550 TB/year workload rating with 24/7 reliability.
Does Exos X16 use helium?
Yes, it features a hermetically sealed helium design.
Buying or selling ST16000NM001G?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Seagate Exos X16 Product Manual, checked 2026-10-27