Turns out that all snapshots are placed in the VM’s default/root folder. Sounds obvious, right? How about if you’ve assigned multiple virtual hard disks on different datastores? That’s where you can have trouble. Using VMware Data Recovery, which first creates a snapshot, then backs it the VMDK, you may not realize until it’s too late that you’ve filled up one of your datastores. VMware provides a way to alter the snapshot “working directory”, but keep in mind that you’ll have to reset that property each time you Storage vMotion that VM.