Insufficient diskspace, to be honest (avg. 50-100MB free on /). Which is due to expensive medical issues that make it tricky for me to work. Been a problem for

Insufficient diskspace, to be honest (avg. 50-100MB free on /). Which is due to expensive medical issues that make it tricky for me to work. Been a problem for a while - worked with just under 8MB free for two years on the 486 I used between 2003 and 2005. The reason I'm doing my best to sit still until I can fix things properly is that buying small HDDs a) multiplies single points of failure beyond the many, many disks I have boxed up and hope still work, and b) increases the total capacity I'll need to _re-purchase_ when I can finally assemble a ZFS pool. Right now, I have enough 400MB and 4GB, 10GB, 60GB, etc HDDs that I need about 10TB (!!!!) of temporary capacity to sanely deduplicate everything. I'll figure out a solution eventually.