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Re: RAID card recommendation

From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
To: "Ing(dot) Marcos Ortiz Valmaseda" <mlortiz(at)uci(dot)cu>
Cc: "Gurgel, Flavio" <flavio(at)4linux(dot)com(dot)br>, pgsql-performance(at)postgresql(dot)org
Subject: Re: RAID card recommendation
Date: 2009-11-24 20:42:19
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Lists: pgsql-performance
On Tue, Nov 24, 2009 at 1:37 PM, Ing. Marcos Ortiz Valmaseda
<mlortiz(at)uci(dot)cu> wrote:
> Do you expose that performance issued caused by RAID 5? Because this is one
> of our solutions here on my country to save the data of our PostgreSQL
> database. Which model do you recommend ? RAID 0,RAID 1, RAID 5 or RAID 10?

RAID-1 or RAID-10 are the default, mostly safe choices.

For disposable dbs, RAID-0 is fine.

For very large dbs with very little writing and mostly reading and on
a budget, RAID-6 is ok.

In most instances I never recommend RAID-5 anymore.

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