As for a backup, could I use ZFS/UnRaid or FlexRaid?
I have the following drives:
500gb seagate barracuda ES(?!)
500gb samsung HD501LJ (pre F1, T166 - I think)
320gb WD I can use from a freeagent pro (unused mostly)
500gb caviar green (1st edition)
250gb hitachi travelstar - pretty slow
250gb WD scorpio (currently used in an enclosure)
160gb (unknown, gotta remove it still)
320gb WD from a lenovo (pretty new)
As you can see there is a variety of disk sizes and speeds. If I combine them, to something like a JBOD, would I get absolute crappy performance, especially if I used them to back up to a server?
PS. I have 2 enclosures already so no more! And I backup probably 250gb tops (i delete all the tv shows/movies etc. or just burn to disc)
I have reservations about selling because quite a few of them are 4+ years and I dont know how much longer they will last.