PostgreSQL RAID configuration

Posted by Yoldar-Zi on Server Fault See other posts from Server Fault or by Yoldar-Zi
Published on 2012-11-30T09:21:46Z Indexed on 2012/11/30 11:09 UTC
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raid

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postgresql

I'm stuck how best to configure disk array. We have Hp P2000 G3 disk array with 24 SAS physical disks 300Gb each. We need to configure this array got 2 copies of PostgreSQL 9.2 because two different system. As we know it's recommended to store database and transaction logs(pg_xlog) files on separate disks.

So we must setup 4 logical disk:

2 for transaction logs with RAID 1
2 for database with RAID 10

Is this right scheme of distribution? Or may be it is best to just make one big RAID 10 with 4 logical disks?

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