pg.ddx.io pgsql-performance@postgresql.org mailing list archive
help / color / mirror / Atom feedIs RAID10 the best choice?
2+ messages / 2 participants
[nested] [flat]
* Is RAID10 the best choice?
@ 2005-12-10 11:34 Carlos Benkendorf <carlosbenkendorf@yahoo.com.br>
2005-12-12 04:45 ` Re: Is RAID10 the best choice? Alex Turner <armtuk@gmail.com>
0 siblings, 1 reply; 2+ messages in thread
From: Carlos Benkendorf @ 2005-12-10 11:34 UTC (permalink / raw)
To: pgsql-performance
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
---------------------------------
Yahoo! doce lar. Faça do Yahoo! sua homepage.
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Is RAID10 the best choice?
2005-12-10 11:34 Is RAID10 the best choice? Carlos Benkendorf <carlosbenkendorf@yahoo.com.br>
@ 2005-12-12 04:45 ` Alex Turner <armtuk@gmail.com>
0 siblings, 0 replies; 2+ messages in thread
From: Alex Turner @ 2005-12-12 04:45 UTC (permalink / raw)
To: Carlos Benkendorf <carlosbenkendorf@yahoo.com.br>; +Cc: pgsql-performance
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
>
> ________________________________
> Yahoo! doce lar. Faça do Yahoo! sua homepage.
>
>
^ permalink raw reply [nested|flat] 2+ messages in thread
end of thread, other threads:[~2005-12-12 04:45 UTC | newest]
Thread overview: 2+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2005-12-10 11:34 Is RAID10 the best choice? Carlos Benkendorf <carlosbenkendorf@yahoo.com.br>
2005-12-12 04:45 ` Alex Turner <armtuk@gmail.com>
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox