I tried rename a vmdk file, but i get information message, like this
You can solve this, when you are going to login to esxi by SSH, and follow this steps below.
1 – Remove disk from VM, but be carefull, you must only remove, don’t delete!!!
2 – Login to ESXi with Putty
3 – cd vmfs/volumes/
4 – ls -l
5 – cd “DS-ARCHIVE” (case sensitive!!)
6 – ls -l
7 – cd vm-FILE
8 – ls -lah
9 – vmkfstools -E OldFileName.vmdk NewFileName.vmdk
10 – Add new named virtual disk file to VM
Source and more details: http://www.blackforce.co.uk/2014/03/03/how-to-rename-a-vmdk-in-vmware-esxi