here is a good paper (MS clusters are a little tricky)  White Paper: EMC PowerPath Migration Enabler Host Copy — A Detailed Review
Hello,  I need to migrate data from the CX4-480 to the VNX5700. We do not have SAN Copy. The host we want to migrate is a windows host. The amount is 7.5 TB of block data. I checked into PPME but it seems it only works with open replicator. It this true? Has anyone used PPME to do a migration between a host on the clariion to the vnx?  Thanks!  Admingirl 
PPME from clariion to vnx(windows host)