Mike Horwath drechsau@tiny.net writes:

So, with 2 raid groups...it is all still one filesystem?

It can be with either one filesystem or two (each one with a single RAID group). There is a nice picture and explanation at:

http://www.netapp.com/technology/level3/3027.html

To avoid fragmentation problems (as in "I have 50 GB free on one filesystem and 50 GB free on another, but I need 100 GB in one place"), all of our filers are single volume (filesystem). Using multiple RAID groups is a much easier decision.

Dan