When I get to about 3 or 4 snapshots I clone it to a new VM template, then reprovision  from the new template/snapshot. After all reprovisioned, I unlock the old template and delete it. Another thing I do is Have a VM that I use just to setup and update, then clone it to another VM to be used for vWorkspace, this way you can have your template with snapshot on multiple LUN. 
hi, i'm wondering one thing about the life cycle of snapshots... When i create news VDi, i use one snapshot of a template. When i made some modifications on template i have to make an other snapshot. And then  Reprovisionning computers... But if i don't need to keep intermediates snapshot, i can't remove them because of vmware linked  clone....Do you keep all your interlmediates snapshots or do you have some workarounds ?  Thanks..  A. 
manage snapshots of templates