vifs.pl just provides a very basic view, you can retrieve additional information, take a look at this script:
Regarding verifying an upload and md5 or any type of verification, I'm not aware of any. The method it's probably is using is CopyDatastoreFile_Task which will just let you know if it uploaded successfully or if it faults.
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William Lam
VMware vExpert 2009
VMware ESX/ESXi scripts and resources at:
VMware Code Central - Scripts/Sample code for Developers and Administrators
VMware Developer Comuunity
Twitter: @lamw
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