vSphere Client 5.1 / VMware ESXi 5.0
I have some very large VMs running Linux that I need to vMotion to another datastore cluster. For example, one of these monsters has about 50 virtual disks of varying sizes, totaling close to 6TB. The disks are thin-provisioned, and only about half of that actually is used. The largest virtual disks are 250GB.
I added 30 new 2TB disks to the cluster, and made a new datastore cluster out of them. My problem is when I try to do the migration:
I highlight a moster VM, chose Migrate, Change datastore
Set the new datastore cluster as the destination, and click Next, then Finish.
"vCenter was unable to find a suitable datastore to place the following virtual machine files for the reasons listed below."
For every disk in the new datastore cluster I get a message that says, "Insufficient disk space on <datastore_name_XXX>".
This is not true. Every one of those disks is empty. Looks like vSphere is trying to put all 6TB of the VM's disks on a single datastore in the new datastore cluster. Why would vSphere do that and how can I tell it to use multiple disks for the destination?