How to move to another SAN?

Define SAN as a collection of harddisks.
Suppose I have SAN1. It is installed with VMWare ESX and VMWare ESX is using RAW disks.
Inside VMWare ESX, there are many SQL server Enterprise 2008 instances using clustering feature.
 
Suppose I must migrate from SAN1 to SAN2.
 
If I use VMWare ESX with VMWare virtual disks, I can migrate to SAN2.
VMWare ESX does not support migrating RAW disks to SAN2.
 
How to solve this problem?
Thanks.