| From: | "Chad R(dot) Larson" <clarson(at)eldocomp(dot)com> |
|---|---|
| To: | Manuel Sugawara <masm(at)fciencias(dot)unam(dot)mx>, Peter Eisentraut <peter_e(at)gmx(dot)net> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-admin <pgsql-admin(at)postgresql(dot)org> |
| Subject: | Re: databases and RAID ... |
| Date: | 2002-05-30 18:17:30 |
| Message-ID: | 4.2.2.20020530111314.00a504d0@ecint.ecinet.com |
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| Lists: | pgsql-admin |
At 01:31 PM 5/26/02 , Manuel Sugawara wrote:
>-RAID (5+0) A logical volume with several RAID 3 logical member
>drives.
Perhaps a typo?
We built what we called a "plaid", in which we built RAID 5 arrays on Sun
A3500 (hardware RAID with cache) [think horizontal] and then striped across
the RAID LUNs with Veritas Volume Manager [think vertical]. The intent was
to have redundance =and= keep essentially all spindles involved in each I/O
(for performance).
This was to hold an Informix database, and we set the stripe size to match
a database page size.
-crl
--
Chad R. Larson (CRL22) chad(at)eldocomp(dot)com
Eldorado Computing, Inc. 602-604-3100
5353 North 16th Street, Suite 400
Phoenix, Arizona 85016-3228
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