Personaly I would split into two RAID 1s. One for pg_xlog, one for
the rest. This gives probably the best performance/reliability
combination.
Alex.
On 12/10/05, Carlos Benkendorf <carlosbenkendorf@yahoo.com.br> wrote:
> Hello,
>
> I would like to know which is the best configuration to use 4 scsi drives
> with a pg 8.1 server.
>
> Configuring them as a RAID10 set seems a good choice but now I´m figuring
> another configuration:
> SCSI drive 1: operational system
> SCSI drive 2: pg_xlog
> SCSI drive 3: data
> SCSI drive 4: index
>
> I know the difference between them when you analyze risks of loosing data
> but how about performance?
>
> What should be better?
>
> Obs.: Our system uses always an index for every access..
> (enable_seqscan(false))
>
> Thanks in advance!
>
> Benkendorf
>
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