A copy of the Lun in ESX 3.5

Hi all

Be friendly with me so here is my first message/question

In my business, we would like to increase the size of the LUN as we are in a lack of space. We decided to do a copy-Lun to keep all the VM and reattached the lun/storage at the existing ESX (we did not want to manually copy all VM the former LUN to the new...)

Admin doing storage copy (a test lun with 1-2 test VM on it...) then allowed us on our ESX, the function of "enablesignature". Rescan us the storage card (the new lun appeared...) then we have put back the storage on our ESX Server... BUT recreate the storage has asked us to "reformat" the vmfs partition (and we "lost" all VM inside...)  : 0.

My question (and I know for sure someone already dealt with that...)...:

How can we attach a copy of the old one (with VM already on it) to our ESX Server without losing all the data on it? I know that we could create an empty storage and move all the VMS from the old to the new... But because of my business processes, we have only one night to do and not enough time to move all THE VMS 'manually '...

I forgot something? I did something wrong? After several attempts, same results: we've lost any datasbecause ESX that we were asked to formatt the new attached storage...

Thanks in advance and waiting for your genius...

Ford

If the logic unit number are the same (because of a copy of low-level storage) your duty as a clone/snapshot (cause disk UUID is identical).

You must use the DisallowSnapshotLUN = 0 option.

http://www.yellow-bricks.com/2008/12/11/EnableResignature-andor-disallowsnapshotlun/

André

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Tags: VMware

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