I would just grow out aggr0 and save the space. There are only a few corner cases where having a dedicated root aggr makes any sense and they are rare. So while it may be nice to have, I wouldn't bother on a system of that size. It would, indeed, be a horrible waster of space.
With one shelf of disks, 99% of customers should set up a single RAID-DP aggregate with a single spare. There are exceptions, but without knowing anything else about your environment or future growth plans, that's what I'd do.
-- Adam Fox adamfox@netapp.com
_____
From: Linux Admin [mailto:sysadmin.linux@gmail.com] Sent: Wednesday, January 24, 2007 2:39 PM To: NetApp Toasters List Subject: 1 disk shelf with 1 head....using just aggr0
Would anyone recommend not using/growing aggr0 if I only have 1 disk shelf Currently I have 1 vol0 in agr0 (1 data disk + 2 paratiy) I would think that creating a second aggr would be just enormous wast of 300GB disks What is the best practice? Should I just grow the aggr0? Thanks