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Vol. 4 No. 2 April 2005

SAS--Hurry up and wait

Serial Attached SCSI (SAS) announcements are coming fast and furious, as vendors race to lay claim to being first to market with servers and disk arrays based on the successor to parallel SCSI disk drive technology. In the last few months, we've seen SAS announcements from LSI Logic (host bus adapter) and Broadcom (RAID on Chip, or ROC), as well as a SAS hard disk drive demonstration from Maxtor. In fact, some vendors claim they'll be shipping a full-fledged SAS server as early as next month. A case in point is IBM, which announced with Adaptec last month that it would ship a SAS-based server, the x366, by mid-May. The server will use an Adaptec SAS I/O and RAID controller. Hewlett-Packard has also committed to ship SAS-based ProLiant servers and MSA arrays in May. But realistically, "SAS isn't ready for prime time," says Luca Bert, director of product and program management at LSI Logic's RAID Storage Adapter Division. "I wouldn't hold my breath ... not because the technology isn't good, but because developing technology takes ...

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Features in this issue

  • Pros and cons of VTLs

    by  W. Curtis Preston

    VTLs aren't perfect, and this tip outlines some caveats about the technology that you need to know before implementing a VTL.

  • First Look: Crossroads Systems' DataMover 240f

    Crossroads Systems' DataMover 240f is a SAN edge device that takes on one of the most vexing backup bottlenecks by keeping data flowing through the network pipes.

  • Are SATA drives ready for the enterprise?

    SATA drives are great low-cost alternatives to pricey Fibre Channel and SCSI drives, but they lack the reliability and performance that mission-critical applications demand. But new technologies are bringing SATA up to enterprise-class standards.

  • Keep track of backups

    Backup reporting tools help track backup failures and determine their cause. Some tools can identify weak links in your backup processes where there's a potential for failure.

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