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Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on - Mailing list pgsql-performance

From Mario Weilguni
Subject Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on
Date
Msg-id 200211220831.11599.mweilguni@sime.com
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In response to Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on  ("Bjoern Metzdorf" <bm@turtle-entertainment.de>)
Responses Re: [ADMIN] H/W RAID 5 on slower disks versus no raid on
List pgsql-performance
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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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