I've read various blogs, etc which suggest that a defrag utility in the guest be run, followed by the VMWare defrag utility, and finally a host disk defrag utility. However they don't explain their reasoning or even explain what the VMWare defrag utility actually does, and I haven't found an explanation elsewhere.
Does it defrag the guest files within the virtual disk? Which is what the guest defrag is supposed to do.
Does it defrag the virtual disk files on the host? Which is what the host defrag is supposed to do.
Or does it do something altogether different?, in which case what is it?
Some other blogs have pointed out that defragging may not be appropriate depending upon the VM config and how the host is storing the virtual disk files (raid, NAS, etc). In my case the host has the virtual disk files stored on a plain local disk and I'm not using snapshots or linked clones. I'm also using VM Workstation 12.5.
Thanks in advance
