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SQL Server 2008 installation

Posted on 2011-09-13
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Installing MS Sql server 2008. Need advice on the disk partition and how to split up the tempdb, userdb and log files.

I currently have 4 partitions on the server. the C:\ drive has the OS and I don't plan to store anything else there. the D:\ drive would have the SQL server application installed. I would like the optimal performance and would like tempdb and log files separated if that's necessary.

Please advise.
Thanks.
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Question by:electric4us
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dwkor earned 1000 total points
ID: 36533529
Partitions don't really matter. Drives/Raids - are.

Move tempdb to the fastest drive possible.
Move database files to RAID 10 (or 5) if possible - goal is fastest random IO
Move log files to RAID 1 - goal is fast sequential IO with maximum redundancy

Check best practices articles:
http://technet.microsoft.com/en-us/library/cc966412.aspx
http://technet.microsoft.com/en-us/library/cc966534.aspx
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by:electric4us
ID: 36533688
dwkor,
the server has 8 sas drives that is configured with raid 10. the partitions are located there. so are you suggesting I have 2 different configurations with that disk set? raid 10 and 1?
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by:dwkor
dwkor earned 1000 total points
ID: 36535928
In such case put data files to Raid 10 and log files to Raid 1. You can keep log files on Raid 10 but Raid 1 would work just fine (again - log requires sequential access only)

Optionally you can put tempdb to another partition - even Raid-0. If you don't want to configure it, split it between Raid 10 and raid 1. TempDb is not critical for recovery process - SQL Server recreates it every time on startup but you'd like to have fastest IO throughput for tempdb as possible. Take a look at best tempdb practices as well - http://blogs.msdn.com/b/cindygross/archive/2009/11/20/compilation-of-sql-server-tempdb-io-best-practices.aspx
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