Not sure this is possible, but...
Let's say you have two raid groups, each striped across 6 disks. Group 1 has 2 LUNs, Group 2 has two LUNs - is it possible to merge the raid groups (i.e. gain striping across 12 disks) and retain your 4 LUN's (intact)?
Might be something to run past my EMC engineers, but figured I'd toss it out on here for discussion. I know I can take an existing raid group and add disks, and it will integrate and expand the group - so I was wondering if I can take that to the next level and simply merge groups that aren't fully utilized, and increasing my I/O.
This is on a EMC NS-20