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  • Should I Use a Windows Striped Volume?

    In Windows Server 2003, you can use the Disk Management console to create a striped volume over multiple dynamic disks (well, you can also create a mirrored, a RAID-5 volume, etc). If these disks (or LUNs) are presented from a SAN, most likely you can stripe across the same storage devices--making up these LUNs--inside the SAN to present ...
    Posted to Linchi Shea (Weblog) by Linchi Shea on March 12, 2007
  • Is RAID 5 Really That Bad?

    RAID 5 is a dirty word in the DBA community and beyond. There are websites devoted to trash RAID 5. I've seen DBAs declaring performance root cause found the very moment they found out that some database files were placed on RAID 5 volumes. You'd be ridiculed and run out of town if you dare to suggest putting the transaction log file on RAID ...
    Posted to Linchi Shea (Weblog) by Linchi Shea on February 7, 2007
  • Beware of Shifting SAN

    Let’s say you are trying to determine the performance impact of a neat database design change you have just devised on an application. So you run some tests with the existing design and the tests run for several hours. Coming back the next day, you make the change and re-run the same tests. The test results look fantastic. Now, before you ...
    Posted to Linchi Shea (Weblog) by Linchi Shea on January 3, 2007
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