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troubleshooting Question

Track alignment in Symantec Storage Foundation for Windows 2000 and 2003 - Hosting SQL Server 2000 and 2005 Databases

Avatar of bergstpg
bergstpg asked on
StorageMicrosoft Legacy OS
7 Comments1 Solution1149 ViewsLast Modified:
It's recommended to align disk after a Windows installation to drastically improve I/O performance within SQL Server 2000 or 2005.  There are several articles throughout the web on the benefits to making this adjustment, so I won't get into it here.  Bottom line - proper alignment can give 40% improved performance for SQL Server - on Windows 2000 and 2003.

Symantec automatically aligns the disk within Storage Foundation - however - it sets the offset to be 96 sectors(49152 bytes) for Hitachi Disk - even though Hitachi specifically suggests 64 sectors (34k or 32768 bytes).  For EMC disk SFW sets it to 128 sectors (64k or 65536 bytes) - which is the standard for most other disk - including non-Dynamic disk.  

Are we the only ones seeing this?  Has any one done any performance tests when set to 96 sectors versus 128 or 64?  Unfortuately this would be a hack since it isn't a configurable option within SFW.  General thoughts?
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