Re: best use of an EMC SAN - Mailing list pgsql-performance

From Jim Nasby
Subject Re: best use of an EMC SAN
Date
Msg-id C808D1E7-6FE4-4379-B441-E46F105972AF@decibel.org
Whole thread Raw
In response to Re: best use of an EMC SAN  (Chris Browne <cbbrowne@acm.org>)
Responses Re: best use of an EMC SAN  (Greg Smith <gsmith@gregsmith.com>)
List pgsql-performance
On Jul 11, 2007, at 12:39 PM, Chris Browne wrote:
>  - Split off a set (6?) for WAL

In my limited testing, 6 drives for WAL would be complete overkill in
almost any case. The only example I've ever seen where WAL was able
to swamp 2 drives was the DBT testing that Mark Wong was doing at
OSDL; the only reason that was the case is because he had somewhere
around 70 data drives. I suppose an entirely in-memory database might
be able to swamp a 2 drive WAL as well.
--
Jim Nasby                                            jim@nasby.net
EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)



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