I move an awful lot of large files among disks (both among partitions and physical disks, if it matters) and I'm concerned of having lots of defragmented files. It's kind of a pain in the ass that ...

I need to set Scheduled Tasks to run defrag on all my four drives (C:, , E: and F. However, as you all know, Disk Defragmenter does not allow for cuncurrent defrags; you must manually start another ...