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SAS: The Next Evolution of SCSI
A Sun Microsystems White Paper
www.sun.com
Abstract
The Small Computer System Interface (SCSI) has enjoyed over twenty years as the defacto standard in the storage industry. In recent years SCSI development has appeared to reach its final iteration as it will likely have difficulty in responding to
the new challenges of tomorrow’s mission critical application environments—including smaller form factors, scalability, storage optimization and performance.
With global commerce and 24/7 information available on-demand now in the forefront, businesses are now turning to a new standard to meet their current and future requirements.
SAS is the newest serial interconnect and successor to iSCSI. SAS has leveraged SCSI technology and improved upon it to offer an improved host interface, as well as drive technology, to meet these increasingly rigorous performance and scalability
requirements. With a solid roadmap and industry acceptance behind it, SAS technology is proving to be the next evolution of SCSI. As a large proponent of leading technologies, Sun has been a leader in SAS with a range of SAS platforms available. The most recent of these is with the introduction of the Sun StorageTek 2500 series of arrays based on SAS technology.
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