I have an ESXi Essentials 5.1 server using local storage. I recently added a new datastore to it (NAS via iSCSI, VMFS). I shut down the VM (Windows Server 2012 with one 4 month old snapshot), and chose Migrate --> Change Datastore. vSphere moved the VM without issue.
When I turned on the VM after the migration, it appears that it lost its current state and reverted to the 4 month old snapshot. I verified that by looking at the Windows Event Viewer entry datestamps.
Does anyone know why this would've happened? According to VMware's documentation it sounds like migration with snapshots is supported. I was hoping to get the current state back but I'm guessing that it's lost since I don't see any files relating to the VM in the original datastore. Luckily this isn't a production server yet but I would hate for this to happen to a more important VM.
Yes, the 4 month old snapshot shows in Snapshot Manager. Honestly, if I realized it was there before the migration I would've deleted it, but it sounds like the migration should still work.