This week someone asked me during the VMTN Podcast on chat if I knew where vmfs-undelete resided in vSphere. I had a look but couldn’t find it either. A quick search gave me this:
vmfs-undelete utility is not available for ESX/ESXi 4.0
ESX/ESXi 3.5 Update 3 included a utility called vmfs-undelete, which could be used to recover deleted .vmdk files. This utility is not available with ESX/ESXi 4.0.Workaround: None. Deleted .vmdk files cannot be recovered.
So if you are currently actively using vmfs-undelete and looking into upgrading to vSphere take this in account!