Backup strategy for large mailbox stores

[Vincent Fox]

Eric Luyten wrote:
> Our Z pool was 83% full ...
> Deleted the December snapshots, which brought that figure down to 74%
>
> Performance came right back  :-)
>   
Running close to full you will eventually run into fragmentation 
issues.  Fortunately
you can grow the size of a pool while it's hot, get some more LUNs 
allocated and
just do a zpool add.  Highly recommend it until there's a patch to add 
background
defrag for ZFS pools.  You're the first person I've read using iSCSI 
though doesn't
that add a bunch of latency?  And 7200 RPM SATA to boot.