Optimal disk partitions for database setup (15 Drives)

Posted by Jason on Server Fault See other posts from Server Fault or by Jason
Published on 2010-03-15T13:53:23Z Indexed on 2010/03/15 14:00 UTC
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raid

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Performance

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database

We are setting up a new database system and have 15 drives to play with (+2 on-board for the OS).

With a total of 15 drives would it be better to setup all 14 as one RAID-10 block (+1 hot spare) OR split into two RAID-10 sets one for Data (8 disks) and one for logs/backups (6 disks).

My question boils down to the following: is there a specific point where having more drives in a RAID-10 setup will out preform having the drives broken into smaller RAID-10 sets.

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