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Re: RAID card recommendation

  • From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
  • To: "Ing. 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: Tue, 24 Nov 2009 13:42:19 -0700
  • Message-id: <dcc563d10911241242of860c49vc95c76f8b33f3bb5@mail.gmail.com> <text/plain>
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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