A SAS drive, sometimes referred to as a Serial Attached SCSI drive, is a kind of disk drive that transfers data using the Small Computer Systems Interface (SCSI). SAS-enabled hard drives are comparable to SATA (Serial Advanced Technology Attachment) drives, except they have greater reliability, higher storage capacities, and faster transfer rates.

Data-intensive applications such as servers, data centers, and other enterprise-level systems frequently use SAS drives. They are a great option for companies or individuals who need a lot of data storage because they come in greater storage sizes, ranging from 1TB to 16TB or more.