Using an HP MSA1510i iSCSI SAN with dual network modules, how should it and Windows Server 2003 be setup to provide full multipath redundancy?

I’ve tried using different subnets, but the MPIO on W2k3 wants them to be in the same subnet. I’ve tried using different IPs in the same subnet, but again the MPIO on W2k3 tries to make both NICs hit the same iSCSI target IP. I’ve tried configuring SA0 and SB0 to the same IP, but SB0 fails saying the IP address is in use.

I have the physical hardware called for with this configuration. The docs with the MSA1510i are practically worthless – it doesn’t actually explain HOW to set this up. All it says is that you need a second switch, etc.

I have the hardware it says is needed. What I need is more information on configuring the HP MSA1510i and Windows Server 2003 to work in a multipath configuration.

Any suggestions?
Just to be clear, the reason for MPIO, the second switch, the second NIC, etc. is for redundancy.

Adding a second IP address to the existing single physical port SA0 does not actually provide redundancy. First, SA0 is managed by the first controller, so if that controller hangs or goes offline, so do your disks. That is why SB0 is used for the redundant connection (or SB1, whatever your configuration dictates).

u dnt need a second switch or watsoever..just reconfigure ur SA-0 again wiz ze same IP…had zis prob wiz a server too

that depends. what type of emc san? is it an iscsi or fibre channel san? or, are you using ndmp? and, what do you mean by "introduce"? are you simply trying to do an integration/installation of a qlogic iscsi hba? if you’re going to ask that kind of question, you need to provide more background on your issue & environment. so, without knowing more, my answer for now will have to be as general as your question. the quick & simple answer is, no, you can’t mix iscsi & fibre channel on the same san. well, at least, not if you want all of the devices to be able to talk to each other. they’re two totally different storage protocols. and, the hardware is different, too. you would need something between the two to do the conversion (block storage multi-protocol converter).