Dell 2.4TB 2.5-inch 10K SAS 12Gbps Hard Drive — 1D0F5

A 2.4TB SAS hard drive in the 2.5-inch form factor with a 10K rpm spindle on a 12Gbps SAS interface, sold under Dell part number 1D0F5 (Seagate manufactured), maker model ST2400MM0159.

Look-alike parts can differ in revision, and the Dell part number is what tells them apart. It is meant for PowerEdge servers and PowerVault arrays with 2.5-inch SAS bays. A drive needs the tray or caddy that matches the server generation to sit in a hot-plug bay. In a hot-plug bay with a redundant RAID level, a failed disk can usually be swapped while the server keeps running. Once a replacement is fitted, the RAID controller rebuilds the array onto it, and larger drives take longer to rebuild. A spare of the same model cuts the time an array spends degraded when a drive fails. A 10K SAS drive is the classic choice for performance-tier arrays holding virtual machines and databases on spinning disk. The 512e format pairs 4K physical sectors with 512-byte emulation, so current controllers and operating systems use it without special set-up. Matching the Dell part number 1D0F5 against your system's parts list is the surest way to confirm the drive fits.

Certified refurbished condition: the drive is inspected, bench-tested and data-wiped in Johannesburg.