Im not sure how the vmware installer partitioned the disk, but the host has 1 internal volume which was used to install the environment. It's holding the OS as well as "datastore1".
Im not too worried, worst case I should make a backup of all the VM's anyhow and can push them back out again if there are issues.
It's really a matter of figuring out how to get a copy of the software at this point.
I have someone researching the HP site to see if they can find an update there.
We had to use the HP specific version because the vanilla esxi did not recognize parts of the HP DL980 G7 box.