VMware 5.5 pointing another VM with same application, to same datastore on Windows 2008 R2.

I have Veeam on a server, it has been backing up to a connected disk that is the LUN to which the backups are stored. I'm moving Veeam to its on server, 2008 R2, and need it to see the DS that exists with our backups.

I was going to remove it from the existing 2008 server, but it said I would erase the data that existed.

When I add the DS to the VM, it gives me the remaining free space on the LUN, but I need it to see the whole LUN with the backups. What am I doing wrong?

Regards
LVL 1
HaroldNetwork EngineerAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
I'm assuming this is a RAW LUN added to your server via software iSCSI ?

This should be completely removeable, and you should be able to more to another server with ease and see the same contents of the NTFS disk (LUN).
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HaroldNetwork EngineerAuthor Commented:
It's not Raw Data Mapping, so I guess it's a RAW LUN yes. When I try to add the LUN to the new Veeam server, it give me the remaining free space, not sure why.
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HaroldNetwork EngineerAuthor Commented:
This is what each VM sees for the 2nd hard disk added. vCenter sees the 6TB and Veeam only see the remaining storage that has not been used.
vcenter-and-veeam.png
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
okay so this disk is a VMDK ?

virtual disk not an RDM or RAW LUN?

You should be able to remove from the virtual machine (not delete from disk), and then browse for it from the new VM, and add it.
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HaroldNetwork EngineerAuthor Commented:
Yes, VMDK

OH, add the VMDK file to the new VM!

Can 2 or more VMs add a hard disk of an existing drive?
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gheistCommented:
Yes, 2 vms can share disk with suitable filesystem and cluster coordination.
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HaroldNetwork EngineerAuthor Commented:
gheist:  hmmm, they are both 2008 R2, but until I removed it from the original server, I kept getting errors when trying to add to the new server. It is done at lease.
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gheistCommented:
You need to set up a windows cluster.
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HaroldNetwork EngineerAuthor Commented:
Huge help guys!! I increased points, because of the hole Andrew got me out of and gheist answered an additional question. Thanks so much. Got an Exchange security question coming next.
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