I know about the warning and how to change the alert percentage.
My question is:
Is there a minimum recommended amount of free disk space for
drives/partitions? I have noticed a big dropoff in perforance before even
getting to the 10% alert.
There is no set in stone recommedation that I am aware of. I generally
leave 20% if I can but thats me. A lot will depend on the speed of the
hardware involved as to when you may see a noticeable drop off in
performance.