
110 Sun StorageTek SAS RAID HBA Installation Guide • March 2010
FIGURE G-2 SAS Expander Connections
Differences Between SAS and Parallel
SCSI
In summary, although SAS and parallel SCSI both use the SCSI command set, how
they move data from one place to another is very different. To support point-to-point
serial data transport, SAS introduces new types of connectors, cables, connection
options, and terminology.
Generally speaking, SAS is faster and more flexible than parallel SCSI, and provides
more options for building your storage space. SAS lets you mix SAS and SATA disk
drives together, and lets you connect many, many more devices.
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