When configuring MPIO with 2 redundant switches, and 2 iSCSI nic's per host, one nic running to each of the two switches(for example), is it *required* to have at least two subnets, one for each iscsi ...
For 2003 the microsoft developers kit enabled storage providers to create and distribute MPIO packages. I know that the real answer is that you should contact your storage vendor for 2003 MPIO support ...