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AWarwick
Contributor
Contributor

Moving a LUN on Physical machine to a VM

I have a physical server with a FC LUN attached for the SAN. I wish to attach this LUN to a VM instead. I've added the LUN to the ESX servers and attached it as an RDM to the VM. The VM sees it but cannot see the disk volume structure and wants to format it. I remove it and put it back to the physical server and it sees it fine.

O/S Windows 2003 Ent R2

VI3 3.5

Any ideas please?

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Anders_Gregerse
Hot Shot
Hot Shot

If you check the geometrics (sectors, heads,etc) for the LUN when attached to the physical server and again when attached to the vm, are they the same? And is the RDM in virtual or physical mode, and last only one server sees the LUN at any given time?

AWarwick
Contributor
Contributor

The geometrics look the same. The RDM is in physical mode and only connected to one VM.

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AWarwick
Contributor
Contributor

OK, tried it again and it worked. No idea what went wrong the first time but now fixed.

Thanks.

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