Over 10 gig's total with over 20,000 different books.
Mostly .rtf's and .txt's with a few unconverted .pdf's and .lits.
I have 3 different backup's going back 3 years, with the most recent backed up on 2 double layer dvd's. Recently added all the Baen CD's to that list. Been reading a lot of David Weber and John Ringo the last few months.
Like you Harry I would very much prefer not to lose my library.