On 02/04/2010 05:45, Roy Sigurd Karlsbakk wrote:
Hi all
> From http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide
I read
"Avoid creating a RAIDZ, RAIDZ-2, RAIDZ-3, or a mirrored configuration with one
logical device of 40+ devices. See the sections below for examples of redundant
configurations."
What do they mean by this? 40+ devices in a single raidz[123] set or 40+
devices in a pool regardless of raidz[123] sets?
It means - try to avoid a single RAID-Z group with 40+ disk drives.
Creating several smaller groups in a one pool is perfectly fine.
So for example - on x4540 servers try to avoid creating a pool with a
single RAID-Z3 group made of 44 disks, rather create 4 RAID-Z2 groups
each made of 11 disks all of them in a single pool.
--
Robert Milkowski
http://milek.blogspot.com
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