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Serial data transmission, which offers performance capable of scaling with ever-growing enterprise storage needs, is rapidly making inroads into disk drive interconnect technology, promising to eventually replace existing parallel architectures. Legacy parallel Advanced Technology Attachment (ATA) drives, long a commodity desktop storage item, are being replaced by serial ATA (SATA) drives, which raise the ceiling on performance and do away with bulky cables while maintaining a commodity pricing structure. Newer SATA drives that are specifically designed with enterprise storage features offer improved reliability that rivals traditional Fibre Channel (FC) and Small Computer System Interface (SCSI) drives.
Advancements in SATA are the equally impressive performance gains being made with Serial Attached SCSI (SAS) drives. Small form-factor (2.5") SAS drives are being offered with greater I/O throughput, reliability improvements, and the ability to scale far beyond what was possible with traditional parallel SCSI drives.
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