Hard disk description explanation

Alceo

In this description:
HP 1TB 6G SAS 7.2K rpm LFF (3.5-inch) SC Midline

what is the meaning of:
-6G
-SC Midline

Thanks!

cyberguypr

6G = 6 Gb transfer speed per second. Midline is the tier. HP uses entry, midline and enterprise.

HP Serial Attached SCSI (SAS) Midline hard drives - Serial Attached SCSI (SAS) provides a superior storage solution. With some storage requirements escalating and others becoming more complex, factors such as flexibility, performance, increased reliability.