Very unlikely you would be provided if such document existed. Defragmentation on SAN storage is considered a no-no even though you are performing it at the VM guest level. I think I recall a entry level windows administrator for a small construction company happen to perform disk defrag on his VM Guest Windows Server. He noticed after that point, he had various of issues related to backing this VM up. Fortunately for him, this was a server he had just deployed from a template so it was no big issue.
Most SAN vendors would tell you never run defrag on volumes that live on their system so that’s should be an indication NOT TO DO IT.
Sorry I couldn’t locate a document for it on this.