VMFS 3 to 5 Upgrade

[JustyC]

New host builds are version  ESX5i, however most of our current production environment is ESX 4.0.  We need to decide whether

to continue formating new datastores to VMFS 3.33 or version 5.  Should we convert the 3.33 ones (approximately 30 + LUNS)

to level 5 ?  What is the best way to do that to minimize any downtime ?  Thanks.

[firestartah]

Hi

If possible I would reformat them as VMFS 5 to allow the new block size across the board. You should be able to migrate all the hosts off a datastore,dlete the datastore and recreate it with VMFS 5. It's a very quick process as long as you don't have massive datastores and slow vMotion.

Gregg