THAT is strange.
VMONCE is part of our vcenter cluster, but this machine is not part of it. It USED TO be, but I removed it from vcenter and wiped it clean before a fresh install of 5.5 for my purposes. This machine is currently on a comletely seperate VLAN that can't even talk to our vcenter cluster.
The ONLY thing I can think of is that the SAN that it is connected to (by fiber) is somehow doing something, as some of the datastores that this machine can use are shared between the cluster as well, but the one I am trying to write to is only on this individual vm host.
Each time I try to repeat it, it does the same thing.