RAID-50

I once read in an O'Reilly book on tuning Solaris about RAID-50. That's
right multiple RAID-5 disk sets each treated as a single logical drive then
striped with RAID-0. The book said that if built correctly load balancing
could make performance approach RAID-10 at considerably lower cost for VERY
large storage arrays.

Have any list members had experience with RAID-50?

There have been a few recent discussions on the pg-performance mailing list
that touched on RAID-50. I'm sorry, but I don't remember the conclusions (if
there were any). I'd suggest a peek at the archives.

Are you researching this for Postgresql Solaris? I would certainly appreciate
hearing about any of your findings, especially if this is for a
PG/Solaris/LVM combination.

Regards,

Michael

On Wednesday 2006-01-18 17:38, Michael Crozier wrote:

I once read in an O'Reilly book on tuning Solaris about RAID-50. That's
right multiple RAID-5 disk sets each treated as a single logical drive
then striped with RAID-0. The book said that if built correctly load
balancing could make performance approach RAID-10 at considerably lower
cost for VERY large storage arrays.

Have any list members had experience with RAID-50?

There have been a few recent discussions on the pg-performance mailing list
that touched on RAID-50. I'm sorry, but I don't remember the conclusions
(if there were any). I'd suggest a peek at the archives.

Are you researching this for Postgresql Solaris? I would certainly
appreciate hearing about any of your findings, especially if this is for a
PG/Solaris/LVM combination.

Regards,

Michael

I wish I had some practical motivation. Alas, I am asking out of idle
curiosity.