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SQL Server Disk Peformance

Posted on 2010-01-11
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Last Modified: 2012-05-08
I'm setting up a new SQL Server 2008 database and have heard that 50-100X IO gains can be attain in high load environments by using separate disks for log and data files.  Thus allowing sequential log writes to not interfere with randomized inserts and updates.  Is my logic here correct?
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Question by:Phil5780
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by:tigin44
ID: 26288147
seperating disks for data and log file and also for the temp files should increase the disk io performance but not as much as you indicated... I never heard or seen such that percentage. But your logic is currect and doing so is advised.
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by:Phil5780
ID: 26288260
What kind of gains would be expected in a high load SQL Server?  We have 200+ connections per second and that figure is growing.
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by:tigin44
ID: 26288303
of course the outcoming performance increase will be the disk IO as you may know which is primary concern on heavy load servers.
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Author Comment

by:Phil5780
ID: 26288385
So the setup I've described above is optimal for a scale-out SQL Server database?
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tigin44 earned 2000 total points
ID: 26288401
sure that is...
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Author Closing Comment

by:Phil5780
ID: 31675784
Great information.  I wanted to confirm my setup completely before committing.  Thanks alot:)
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