Recently had to move some vm's around on esxi 5.1 server. Thin disk on server (S1) was out of control - expanding way too quickly. Used VMware converter to move S1 to another host, converting to thick disk along the way.
Once S1 was up on temp host, had customer delete about 400GB of files (leaving about 450GB still on S1 c: drive).
Not enough space to put S1 back on original host as thick (was a 2TB c: drive only P2V) so I used VMware converter to move S1. I ASSUMED only about 450GB would be transferred - wrong. At about 600GB, I had to cancel the operation as my down time window expired and the converter still had MANY hours left.
Then used, for testing purposes only, Acronis to create a vmreplica, setting the job to convert to thin disk along the way. Same thing so far - I've moved over 600GB of data.
What do I need to do to S1 before attempting another move? I've read about sdelete and those types of tools; however, thought they were only needed for thin disk management.
My goal is to move S1 back to the original hardware (the datastore has 1.8TB available) as a thin-disk vm - with the expected consumption of less than 500GB of the 1.8TB.