I know there is a lot of confusion around reallocate of vols and aggrs.. I know here are the steps for doing a reallocate on a vol..

· DOT 8.1px 7mode

· 6080 HA

· FCP

· FC/SAS aggr 64bit

Steps:

· Add disks to aggr

· Break snapmirror

· Reallocate volumes  (-p)   yes, I have snapshots

· Reallocate aggr

· Resynch snapmirror

· Done

Here is one of the best explanations I have read out there with reallocation.  Pictures help…

http://www.theselights.com/2010/03/understanding-netapp-volume-and.html

Here is my question..

Why do I have to break the SM?  Won’t the resynch synch up the blocks on the SM destination?  I am thinking of doing all the steps and just doing a reinitialize on the destination vols.  It’s about 7TB of volumes, but I don’t want to if it’s not needed.

I have not read any data on this, other then saying to break and resynch.. I have exchange jobs that I don’t want to have to break for a day or two while I am doing reallocates.  The value on the measure on some of the vols are 16, which I hear is not good but others have seen larger numbers.

Thanks all!