LARGE single-system Cyrus installs?

[Wesley Craig]

On 14 Nov 2007, at 23:15, Vincent Fox wrote:
> We have all Cyrus lumped in one ZFS pool, with separate filesystems  
> for
> imap, mail, sieve, etc.  However, I do have an unused disk in each  
> array
> such that I could setup a simple ZFS mirror pair for /var/cyrus/ 
> imap so
> that the databases are in their own pools.  Or even I suppose a UFS
> filesystem with directio and all that jazz set.

About 30% of all I/O is to mailboxes.db, most of which is read.  I  
haven't personally deployed a split-meta configuration, but I  
understand the meta files are similarly heavy I/O concentrators.

:wes