16TB SAS Drive Part Numbers: Exos, Ultrastar and Toshiba Lines Compared

Which lines carry a 16TB SAS hard drive

These are the SAS models printed on each maker's sheet for the lines compared here. At this capacity the part number matters more than the brand, because one maker can have several generations in the same size.

The portfolio sheet coded 2512, with a 2025 copyright, keeps 16 TB in its SAS table beside 24, 20 and 12 TB. Seagate's DS2080-2307US sheet labels those same numbers Exos X24. So a listing that just says Exos 16TB SAS could be any of three Seagate generations.

16TB SAS hdd price on Amazon.co.uk

This table holds 1 listing right now. A listing appears here only when we can confirm both 16 TB and SAS for it, so a drive whose interface we cannot confirm stays out rather than being guessed in. Prices are pounds sterling inc VAT. Synology's own-branded HAS5300-16T is also catalogued as 16 TB SAS. We have not read a Synology document for it, so it has no row in our comparison and we state no specification for it.

In-stock alternatives

None of these is the product this page covers: they are what is in stock on Amazon.co.uk beside it right now. Each row says why it is listed. Check the interface, form factor and part number against your system before buying.

What changes from one 16TB SAS line to the next

MG11 is the lowest in that table at 0.26 W/TB, with one caution: Toshiba prints that figure in a merged cell shared across capacities, so it is a group value, and the MG09 figure is the same kind of cell. Newer does not mean lower among the Seagate drives. The X18 idles 0.5 W above the X16 at the same capacity, the X24 generation idles a further 1.0 W above that, and X18 SAS draws more than its own SATA sibling at 5.1 W.

Under load the X16 SAS drive is rated at 10.2 W and 6.2 W for maximum random read and write at 4K/16Q. Two features separate SAS from the SATA models on Seagate's sheets. The first is protection information: the X16 and X18 tables say Yes to T10 DIF for SAS and print a dash for SATA. The second is sector choice. On the X16, SAS offers 512, 520 or 528 bytes under 512e and 4096, 4160 or 4224 under 4Kn, where SATA has 512 and 4096 alone. X16 SAS is dual-port and SATA single-port, and the X24-generation SAS table also reads Dual.

16TB SAS Seagate: part numbers that differ by one letter

Seagate reuses digit groups across generations at this capacity, and the final letter does the identifying. The same digits mean different drives on different sheets, and a typo in a search or a title can land you on another product.

A listing titled Exos X16 ST16000NM002C does not match Seagate's X16 SAS number, and the C form is printed under SATA on the recertified sheet, so check the number whatever the listing's interface field says.

16TB SAS refurbished: what the recertified sheet covers

Seagate's factory recertified table for 14 to 22 TB is headed SATA 6 Gb/s, with ST16000NM002C, ST16000NM003C and ST16000NM004C at this size. That table gives a used SAS unit nothing to be matched against, and we would not assume its terms reach one. The wider used market for this interface is the subject of our page on refurbished SAS drives.

Before you buy: the controller

Seagate's installation note puts it bluntly: connecting a SAS drive to a SATA controller will not work. The whole rule, including what goes the other way and where the drive connects, is laid out on our 20TB SAS drive page and in SAS vs SATA, so it is not repeated at this capacity.