Disk Group Import Slow

We're seeing disk group import times of 5+ minutes for disk groups that contain more than 25 LUN's.

I think the issue is related to the number of paths per LUN, which is 4, so VxVM is potentially scanning for N x 4 paths?

Has anyone else seen this behavior and more impotantly what was done to reduce the disk group import times?

Environment

• SF HA Enterprise v6.1 and EMC PowerPath v5.5 SP2
• Solaris 10 and Solaris 11.
• EMC V-Max storage
• Each disk group has ~25 LUNs, each LUN has 4x paths, 3x disk groups per host.
• Using VCS for HA and failover.