Yeah, well.. fragmentation is a problem if you don't pay attention to it

Better not to download several movies at once etc.. or at least download them to separate temp partition and copy them one at once to final destination. When you're aware it, it's pretty easy to keep partitions non fragmented. But booting, scanning and using non fragmented partition feels faster (IMHO).
I haven't had problems with big amounts of data. I've copied several times over 100G batches without problems over the years and systems.
Filesystem errors I've got similar amount on PFS3 and SFS.. not too often on either. Couple times over the 10 years... with PFS3 it usually can be fixed with pfsdoctor/diskvalid, but SFS needs reformatting. On Pegasos I haven't got any.. so it might have been because of kludgy & patched up a1200 too
