> Is it safe to use autodefrag for my use case? It sounds like it might be "safe" (the text doesn't actually say it's unsafe, but just that it has downsides).
I do wonder why you'd want to do that, tho. Fragmentation is typically something that clueless Windows users worry about (a left over from the days of FAT filesystems; and even tho it became largely useless under NTFS it persisted because it's easier to tell people how to defragment than to explain to them why it's not needed any more). Do you have a concrete reason to think that defragmentation will bring you any tangible benefit? Stefan