Used
$11.87/TB
4TBSAS
HGST HUS724040ALS640/H7240AS60SUN4.0T 4TB SAS 6Gb/s 3.5in HDD Tested
HGST
from$47.46
1 leftBrand
WD Ultrastar and HGST Hard Drives
WD Ultrastar is Western Digital’s datacenter hard drive line, which began as HGST Ultrastar before Western Digital took over the HGST brand. Current models carry the DC HC name, such as the Ultrastar DC HC530 and HC550, while older drives carry HGST branding; part numbers begin with HUH, HUS or HUA for HGST era drives and WUH for newer ones. Most models come in SAS and SATA versions and in 512e and 4Kn sector formats, and the part number encodes capacity, interface and format, so match it against your controller before you buy. Ultrastar drives are common in servers, storage arrays and large NAS pools, and they also ship under Dell and HPE part numbers with OEM firmware. When buying used, compare the power-on hours we list for each unit. Every used drive passes SMART health and an extended self-test before it ships.
1 in stock · Tested in-house · 30-day returns
WD Ultrastar: common questions
Are HGST and WD Ultrastar the same line?+
Yes. Western Digital acquired HGST and kept the Ultrastar line, so older drives carry HGST branding and newer ones carry WD branding, with the same model families continuing.
What does 4Kn mean on an Ultrastar listing?+
The drive presents native 4K sectors instead of 512-byte emulated sectors. Modern operating systems and ZFS handle both; some older RAID controllers need 512e.
What warranty do these carry?+
Used items carry a 90-day warranty, and certified drive tiers carry up to 2 years; the exact term is on each listing. New sealed items keep the manufacturer warranty.