| From: | Mario Weilguni <mweilguni(at)sime(dot)com> |
|---|---|
| To: | "Bjoern Metzdorf" <bm(at)turtle-entertainment(dot)de>, "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com> |
| Cc: | <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on |
| Date: | 2002-11-22 07:31:11 |
| Message-ID: | 200211220831.11599.mweilguni@sime.com |
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| Thread: | |
| Lists: | pgsql-admin pgsql-performance |
Am Donnerstag, 21. November 2002 21:53 schrieb Bjoern Metzdorf:
> > In fact, the linux kernel supports >2 drives in a mirror. Useful for a
> > mostly read database that needs to handle lots of concurrent users.
>
> Good to know.
>
> What do you think is faster: 3 drives in raid 1 or 3 drives in raid 5?
>
> Regards,
> Bjoern
>
If 4 drives are an option, I suggest 2 x RAID1, one for data, and one for WAL and temporary DB space (pg_temp).
Regards,
Mario Weilguni
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