SATA HDD V.S SAS HDD

Two new serial interfaces to disk drives are replacing two venerable parallel interfaces. The Advanced Technology Attachment (IDE/ATA) interface will be succeeded by Serial ATA (SATA), and the Small Computer System Interface (SCSI) will be replaced by Serial Attached SCSI (SAS). These new point-to-point technologies provide greater dedicated bandwidth and smaller connectors, and SAS technology supports both SAS and SATA disk drives. The one-two punch of the SAS/SATA value proposition is simple: SAS hard drives deliver the speed, reliability and scalability demanded in high-availability enterprise environments, while high-capacity SATA drives are ideal for bulk storage applications, combining low cost per GB and greater reliability and scalability than their parallel ATA ancestors. Complementary by design, SAS boasts the best performance/dollar while SATA offers maximum capacity/dollar.