How to add a LUN replicated to vCenter for test of recovery after disaster?

We are currently on version 5.1 of ESXi and vCenter.  We have a DR test to come to one of our applications that includes about 12 VMs.  My question is, when he introduced the LUNS replicated to our Dominican Republic / Test environment vSphere on our DR site, should we choose to will Lun?  I thought I had read somewhere that for all hosts in a cluster VMware can see the LUN, it must be resigned, rather than simply mount the LUNS without resignaturing, which I believe cannot be presented to a host then do it this way.  I just wanted to confirm whether or not it is correct.

Also, if will be resignaturing LUN, we must manually update the references for each virtual machines vmdk files, or which is done automatically?

When making a DR test previously and just pick up the LUN and not at will, the logic unit number was visible as a single host that is located in a three-node cluster.

Thank you

What will happen when you present a LUN to a host depends on whether the host saw the signature before, i.e. the LUN was mounted previously and was not dismantled/detached correctly. In the case of a known signature, the LUN will be considered to be a 'snapshot LUN' and it is necessary to will it to make it appear like a new LUN on the host, or you will have to manually force mount the LUNS. By resignaturing the LUN to one of the hosts, it will be recognized by all other guests too. Editing should be done separately on each host. For more information, see http://kb.vmware.com/kb/1011387.

You can also take a look at http://kb.vmware.com/kb/2004605 to find out how properly remove/detach a unit logic of a host number, so that should not keep the signature.

André

Tags: VMware

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