OLTP Sql Server RAID configuration with 10 disks, allocation Unit and disk stripe size

Posted by Chris Wood on Server Fault See other posts from Server Fault or by Chris Wood
Published on 2012-06-22T09:04:57Z Indexed on 2012/06/22 9:17 UTC
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Filed under:

windows-server-2008-r2

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raid

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sql-server-2008-r2

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stripe-size

On a new db server I only have 10 disks to play with,

The usage is about a booking every 3-5 seconds, so not high volume, I know compromises have to be made, but my initial thoughts are -

DISK 1 & 2 - RAID 1 - OS
DISKS 3,4,5,6 - RAID 10 - Data, Indexes & TempDB
DISKS 7,8,9,10 - RAID 10 - Logs & Backup

Full backups will take place when there is virtually no traffic on the website so not bothered about the contention with the logs.

disk 3-10 - 8kb NTFS unit allocation size
disk 3-10 - 64kb Disk Stripe size

does this seems to be sensible, any other considerations I have omitted ?

thanks

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