From: | Janning Vygen <vygen(at)gmx(dot)de> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Hardware related question: 3ware 9500S |
Date: | 2006-04-12 17:37:38 |
Message-ID: | 200604121937.38821.vygen@gmx.de |
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Thread: | |
Lists: | pgsql-general |
Thanks for your fast reply.
Am Mittwoch, 12. April 2006 18:31 schrieb Merlin Moncure:
> On 4/12/06, Janning Vygen <vygen(at)gmx(dot)de> wrote:
> > Hi,
> > disk 1: OS, tablespace
> > disk 2: indices, WAL, Logfiles
> > - Does my partitioning make sense?
>
> with raid 10 all four drives will appear as a single physical device
> shared by all. I'm personally not a big fan of logical partitioning
> of a single raid device unless you are trying to keep a physical
> volume under 1 TB for example. Each sync on the volume is guaranteed
> to sync all 4 disks regardless of how you set your partitions up.
Ok, i am not a raid expert. but in my understanding RAID 10 is faster than two
RAID 1 arrays, aren't they? So, given that i can put up to 4 S-ATA disk in my
server and the mentioned raid controller. Would you prefer no-raid, RAID1 or
RAID 10?
> > - I want to know if 3ware 9500 S is recommended or if its one of those
> > controllers which sucks.
>
> escalade is a fairly full featured raid controller for the price.
> consider it the ford taurus of raid controllers, it's functional and
> practical but not sexy. Their S line is not native sata but operates
> over a pata->sata bridge. Stay away from raid 5.
thanks for your recommendation. ford taurus is ok for me :-)
kind regrads
janning
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