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Terms explanation:SAS, SATA, LFF, and SFF

The hard disk is an important storage part in a computer. The majority of software that people use for a computer to function properly should be stored on a hard disk. Compared with memory card and optical discs, the hard disk offers large storage capacity. It is a storage device based on a rigid rotating disk, and it stores and retrieves digital data on a flat magnetic surface.There are many terms related to the hard disk, we will have a brief introduction here: SAS, SATA, LFF, and SFF.

SAS: Serial Attached SCSI interface, which is compatible with SATA interface hard disks.

SATA: Serial ATA interface, commonly found in desktop and laptop hard disks.

LFF: Large Form Factor, referring to the size of 3.5 inches, typically seen in desktop hard disks.

SFF: Small Form Factor, indicating the size of 2.5 inches (note that this is different from the 2.5-inch laptop hard disk).

The “L” and “S” represent large and small, respectively. Servers or disk enclosures use SFF hard disks mainly to increase the disk capacity within a given unit density, enhance heat dissipation, and reduce power consumption.


Post time: Jul-19-2023