troubleshooting Question

HP EVA 3000 SAN issues

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kiwistagFlag for New Zealand asked on
StorageServer Hardware
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We have a HP EVA 3000 in MIMO (Multipath I/O) mode as per attached PDF. MSA-SAN.pdf
Initially we could fully configure the MSA but none of the LUN's would present to servers. The servers could see the SAN and we could use EVA CommandViewer to configure it. However after a multitude of checking and re-checking cables and Unitializing the SAN now it comes up just scanning for disks.

A & B channels have copper interconnects instead of Fiber connections. There is no SAN Loop switch in this configuration.
It is a 2nd hand SAN and was running version 3.x when we got it. We upgraded to 4.1 to try to assist with using it in MIMO mode.
Although the attached diagram is rough there are 2 uplinks in redundancy to the SAN FC Switches.
Another SAN exists on the SAN FC switch (EVA5000(HSV110)) and has no issues. Where possible we have tried to replicate settings (to show LUNs, etc) but with no luck. We have had Zoning on and off to try to rectify the faults.

Any ideas on what we can do or try? If it comes down to it I'm happy to break the SAN into 2x 2 disk banks and use individually.
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