New
$38.00/TB
12TBSATA
WD Gold 12TB SATA 6Gb/s 7200RPM 3.5" Enterprise HDD WD121KRYZ New Sealed
Western Digital
$455.96
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12TB Hard Drives
12TB enterprise hard drives are a common middle size for NAS and server storage. They are large enough for media libraries and backup sets while keeping rebuild times shorter than the largest drives. Models include the Ultrastar HC520, Seagate Exos X12 and Exos X14 or X16 builds at 12TB, and WD Gold, mostly helium-sealed and offered in SAS and SATA. They are popular in six to eight bay NAS units, homelab ZFS pools, and as replacements in arrays first built with 12TB disks. If you are buying several drives for a new pool, buying the same model in one order keeps firmware and behaviour consistent across the set. Compare the power-on hours we list for each unit, and check the interface and sector format against your controller. Every used drive here passes SMART health and an extended self-test before it ships.
1 in stock · Tested in-house · 30-day returns
12TB Hard Drives: common questions
How many 12TB drives do I need for my pool?+
It depends on the layout. The RAID calculator shows usable space for RAID 5, 6, 10 and ZFS RAIDZ levels from the drive count and size you enter.
How do I know how many hours a drive has?+
We read power-on hours from the drive’s own SMART counter. On certified listings they are printed on the certificate in the box and shown on the unit’s public test report. The counter stays on the drive, so you can read it yourself on arrival with any SMART tool.
What warranty comes with these drives?+
Used drives carry a 90-day warranty, and certified tiers carry up to 2 years; the exact term is on each listing. New sealed drives keep the manufacturer warranty. Every order also has 30-day returns.