Serial ATA (SATA) feature set is complete, the shortcomings of Parallel ATA, SATA and enterprise-class and outside of the RAID subsystem as an ideal choice for deployment on how to solve the SATA shows why.
Hot – Plug functions
Parallel ATA hot-plug drives to support is hampered by its inability. Any Parallel ATA-based RAID solution, replacing the driver of a degraded RAID array cannot be turned off before the number of devices connected to the host bus is required. Provide an alternative to the reduced performance capacity will continue to use an array of degenerate. It is also the option of a year-round enterprise-level availability and high performance are important requirements that the environment is evident in the permit. It supports SCSI and Fiber Channel ATA hot plug drives, despite the cost advantages, the enterprise level for the Parallel ATA did not give any reason why you can easily find. On two AIDS support for hot-plug drives, SATA resources.
Lower than the larger cable width and length
Parallel ATA standards of integrity, crosstalk between adjacent signal lines to reduce the role based on Conductive elements 40 and 80 conductor cables with the introduction of improved signal ATA/ATAPI-4. Not increase the existing number of conductive elements 40conductor cable due to the use of thin gauge wire to increase the width of the cable, but the width of the cable, but the server and disrupting the flow of cooling air for limited chassis design. The Parallel ATA to reduce confusion and efficient access to system components to improve the cable routing to the chassis by 18 inches off has continued to limit cable length.
Differential signal lines for transmitting and receiving a pair of another pair, and – SATA uses a parallel ATA data cable consists of seven drivers is more than twice the cable length of 1m around the limits of the middle and can transmit and receive pairs Each end of the field. Some restrictions on the radius of curvature, but it is very convenient with a thin, flexible cable with a few small units can be moved (just 8mm wide and connectors). This very high density server with internal RAID drives is attractive.