But as the year progressed, Serial Attached SCSI (SAS), SCSI's serial replacement technology, evolved to become last year's principal storage trend as it joined forces with SATA to begin supplanting the aging parallel SCSI
These include: the iStor inAbled aXstor Ai iSCSI-SATA Storage Subsystem, which replaces parallel SCSI
in DAS and NAS environments and supplements or replaces FC in SAN environments; and the iStor inAbled aXstor Ai iSCSI Storage Subsystem, the company claims.
SAS is a next-generation serial interface designed to extend the capabilities of today's parallel SCSI
drives and provide users with improved performance, system design flexibility and product reliability.
For example, there are new devices available such as the Ultra SPI-3 (SCSI-3 Parallel Interface) and SPI-4, and Ultra160 or Ultra320 parallel SCSI
Compared with preceding parallel SCSI
channels, basic FC-AL provides: Higher data throughput with up to 5x more bandwidth over SCSI; Greater scalability, addressing up to 7x more disk drives per channel; Greater distances between servers and storage pools with cabling lengths increased more than 20x (multi-mode) or 400x (single-mode); and Expanded connectivity options based on fibre channel hubs and switches.
This parallel SCSI
adapter allows users to attach up to seven SCSI devices to their printer port.
The 3ware 9690SA-4I, with its attractive price point, makes 3ware SAS available to a greater audience as it helps to more cost effectively replace the aging parallel SCSI
Overcoming many of the limitations of traditional parallel SCSI
implementations, SAS solutions that offer connectivity choices and support both SAS and Serial ATA (SATA) drive technology enable enterprises to easily create tiered storage environments.
5- to 10-fold increase in effective data bandwidth over the traditional parallel SCSI
The server market has successfully transitioned from parallel SCSI
, which dominated the market for over 20 years, to 3Gb/s SAS," stated Harry Mason, Director, Industry Marketing, LSI, and President of STA.
Backup administrators needed to use a Fibre Channel to parallel SCSI
protocol converter (also called a Bridge or Router) to connect their native SCSI drives and libraries to the Fibre Channel SAN.
As predicted, the market is making an orderly transition from Parallel SCSI
to SAS as the mainstream server storage interface of choice.