This guest post by Armin Kerl runs you through the procedure to rename a 3PAR remote copy (RCOPY) group. The truth is, that you cannot rename them, so the correct title should be:
How to move a Volume between RCopy Groups without the need to do a full resync,
below are the steps you need to take:
1 First, create a new empty RCopy Group with the new Name (using SSMC).
2 Next we need to stop the RCopy group and unexport the volume. From the CLI stop the Old_Group:
showrcopy -d groups Old_Group stoprcopygroup Old_Group
Unexport the Volume from Old_Group on the Secondary Site (using SSMC).
3 Having stopped the RCOPY group and unexported the volume we can remove the Volume from Old_Group but choose to keep the snapshot:
dismissrcopyvv -keepsnap Prim_Volume Old_Group
4 To avoid a full resysnc of the volume we want the new RCOPY group to use the existing snapshot. Find the newly generated snapshot name:
showvv -p -type vcopy
5 Add the Volume to the new New_Group:
admitrcopyvv Prim_Volume:sv.0.rcpy.36.264.1 New_Group Sec_3PAR:Sec_Volume.r
6 Start and check the New_Group:
showrcopy -d groups New_Group
7 If the Old_Group hasremaining Volumes, do the same:
startrcopygroup Old_Group showrcopy -d groups Old_Group
8 Export the Volume again on the secondary 3PAR (use SSMC).
9 Finally delete the temporary Snapshot: