'Insufficient disk space' when migrating individual disks

[pedroerp]

Hi guys,

I've just created a 600GB datastore on my vSphere and every time I try to move an individual 500GB disk from a VM to that datastore, I got a "Insufficient disk space on datastore 'mydatastore'" error. I think the problem is that even though I'm trying to move just one disk, ESXi tries to allocate space for all disks in the VM, which would exceed the datastore space. Am I missing something here?

Does anyone have a workaround for this?

I think this problem is similar to [0], which had no answers...

[0] - http://communities.vmware.com/thread/310437

Thanks

[VirtuallyMikeB]

Good day,

What kind of storage are you using?  Storage can be overprovisioned.  If there's not enough free space on your storage system, the copy could fail.  Include some more info on your storage setup, including how many aggregates, volumes, LUNs, etc., you have and how much space the'yre using, and on and on, and we can get a better idea of what's going on.

Cheers,

Mike

http://VirtuallyMikeBrown.com

https://twitter.com/#!/VirtuallyMikeB

http://LinkedIn.com/in/michaelbbrown

[continuum]

I would try to copy the vmdk with vmkfstools

vmkfstools -i <path to /directory/existing.vmdk>  <path to new datastore/directory/name.vmdk>

[pedroerp]

Manually, I was able to copy the disk to the new LUN, removing it from the VM, copying and then adding it again. Maybe it is some kind of feature (bug?) of the vSphere client interface.

Thanks guys.