Serial ATA (SATA) and Serial Attached SCSI (SAS) are two different protocols used for serial connections between hosts and peripherals in desktop, server, and other applications. SATA and SAS have several similarities in terms of data rate and signal requirements, but each technology is targeted for slightly different applications.

This paper presents a general overview of each technology, including a description of some of the applications for SATA and SAS. A comparison between SATA and SAS is included to help explain why both technologies are supported and used together at times. Finally, some evaluation results using the Mindspeed M21250 quad channel reclocker are included to show how this device can perform to improve signal integrity with SATA and SAS systems.