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Vol. 3 No. 6 August 2004

Definition:

Disk thrashing: In systems that use virtual memory, disk thrashing manifests as slow or stalled application performance at the same time as a lot of disk activity. Sometimes referred to as swapping pages, it's the result of a hard drive being used excessively for virtual memory because the physical RAM memory is full. Disk thrashing slows down the performance of a system because data has to be transferred back and forth from the hard drive to the physical memory. It's common in older PCs with limited amounts of RAM.

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Features in this issue

  • SAN switch smarts

    Switches can now handle storage management, performance management and security. Here's a comprehensive look at the pros and cons of intelligent switches.

  • Big Mac attack for storage

    by  Alex Barrett

    Got storage-hungry Mac desktops to feed? Apple Computer Inc.'s Xserve RAID, its 3.5TB RAID array and the Xserve platform running Mac OS X have performed a minor miracle: Together, they seem to have made Mac a legitimate server and storage platform.

  • First look: iStora 4000 from Breece Hill

    by  Lawrence Disbury

    The iStora 4000 offers idiot-proof disk-to-disk-to-tape backup that smaller customers can afford.

Columns in this issue

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

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