Multivolume disks?
– uid object migration in distributed environment
– have a distributed volume (e.g. lab scenario, all lab machines have same ‘volume’ mounted and sync of primary machine)

Snapshots for all versions?
– each version would require > 1 block
i.e. 10 mods of 10 bytes to 1 block would require >= 10 extra blocks
hmm… has to be better way in this scenario….

B+Tree of unique ids (seperate from walnut object IDs).