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Filthy_Defiler

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HP P2000G3 MSA iSCSI redundancy for VMWare ESXi

I'm looking to set up a 1Gb iSCSI P2000G3 hard disc enclosure, and want a redundant config for VMWare ESXi.  I already have two switches, and there'll be two controllers in the storage.  I understand that each controller should be connected to both switches - the wiring is very well explained on HP and DotHill's websites.

What I don't understand is the IP configuration.  I need to configure 4 ports, and they all ned different IP addresses.  Do they need to be on different subnets?  HP say yes, and then give a clear example of different addresses on the same subnet (255.0.0.0 netmask!).

My current iSCSI storage is on 172.17.1.0/24 - can I establish the new storage on that one class-c subnet?  Should I put both port-0s on that subnet and both port-1s on a different subnet?  Should the subnets be routable?  (My router is only 100Mb...)  Should I put subnet A on one switch and subnet B on the other?

I know that's a lot of questions - a link to a decent HowTo would be fantastic! :)

Cheers!
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So what we're saying then is that (on the diagram you referenced) you have two networks:

1) Port 0 on both MSA controllers, Switch A, and the lower port on both servers.
2) Port 1 on both MSA controllers, Switch B, and the upper port on both servers.

The "Best Practices" whitepaper form HP says the following:

IP Address scheme for the controller pair
The P2000 FC/iSCSI combo G3 MSA (for iSCSI traffic) and P2000 G3 10GbE iSCSI MSA use port 0 of each controller as one failover pair, and port 1 of each controller as a second failover pair. Therefore, port 0 of each controller must be in the same subnet, and port 1 of each controller should be in a second subnet.
For example (with a netmask of 255.0.0.0):
· Controller A port 0: 10.10.10.100
· Controller A port 1: 10.99.10.120
· Controller B port 0: 10.10.10.110
· Controller B port 1: 10.99.10.130

This is what left me confused, because with that netmask they're still on the same subnet :-/
That said, anyone who chops up a Class-A like this should really be relegated to drawing clouds on diagrams instead of actual data paths.  Hmm.

Anyway, I think that's all I was looking for - just a bit of clarity.  Both switches are wired together, but I'll be setting up VLANs, which don't need to be carried across the fibre.  And the existing iSCSI is not fault-tolerant, so it'll just get slung into one of the VLANs until it's retired.

Thanks - now I just need to wait for a big box of stuff to arrive!
I'll try to get that rectified, you're right, they typed the netmask in wrong.
Heh - glad I'm not just being stupid.  I was laying out wiring diagrams for most of the day and then I faced that once my mind was mush.  Couldn't fathom it at all!