It is noted that if Backgound verify on any or all the LUNs residing in a RG is stuck, it can lead to RAID Group defragment to remain stuck at 0% indefinitely.  Please trespass the all the 10 LUNs in the problem RAID Group to the peer SP. This will force trigger the Backgroup verify and should resolve your RG Defrag issue.  NOTE: You might also want to upgrade the FLARE Code to version 29 patch .006  (04.29.000.5.006) and later as there was a similiar issue in the previous code.   - Sadik Sayed
I have a CX4-960 with a 1341GB FC 15k RAID 1/0 (5+5).  It has 10 100GB LUNS on it.  When I look at the “partitions” tab on the raid group properties, I see a 200GB purple hole.  No problem.  But I would like to have a contiguous 340G partition available. Once again no problem, just defrag right? So I started the process.  Well, Defrag (set on HIGH) has been running now for 3 weeks and it is still at 0% complete.  And I hear there is no way to cancel the process.  What’s the deal?  I’m getting tired of looking at that big blue “T” on my RAID group.  I have defragged dozens of RAID groups in my other CLARiiON without any issues whatsoever.  Any suggestions?  Should I migrate all 10 LUNS off this RAID group and destroy it?  Can I even migrate a LUN that is being Defraged?  Thank you  -Brian
CX4-960 defrag help.