Disk Problem on Continuous Access EVA4400 with ESX server

[Andros]

Hi everybody,

I have two HP EVA4400 in replication with CA.
Let me know if you can change a VDisk's UUID.
I have a problem on ESX machines,
when I do a failover from one storage to another,
ESX servers do not recognize the LUNs because they have different UUID.


Hope to have your news as soon as possible!!

Thanks

[Richard Tengdin]

have you verified that the VDisks have the same LUN number to all the ESX hosts? That can cause many problems.

[Uwe Zessin]

You cannot change an object's UUID, because this would corrupt the internal object relationship database. You can, however change a virtual disks's "World Wide LUN Name:" (which is usually the same as the UUID) when the virtual disk is unpresented.

[Ivan Ferreira]

I agree with Uwe, but anyway, CA replicates also the WWLN of the disks. If you break the replica, then you can specify a different WWLN, but should not be necessary.

Please see also:

http://communities.vmware.com/thread/66862