I'm
becoming convinced that the safest way to preserve software is to
keep it on a live filesystem that's frequently backed up, using at
least one type of relatively modern storage media - or at least on
mylar tape, although that's impractical for large amounts of data (and
impractical for me because I haven't acquired a tape punch/reader
yet). Any thoughts on this?
I've already become convinced the only practical way to preserve it is onto
live filesystems that are regularly backed up.
I agree to this. Fortunately the storage capacity of disks is increasing
rapidly enough that I am able to keep all the files or disk images that I've
ever had with plenty of room for current software. I currently use manual
mirroring, since disks are much cheaper than a tape drive. Give it a year
(or less) and disks will be less expensive than an equivalent tape, much
less a drive. (DLT tapes are $1/GB or so. Big disks with 5 times the capacity
are $1.80/GB.) My next semi permanent backup solution will likely be a
DVD+RW even though that falls far short of the capacity I would desire.
My next step after that is a hot swappable RAID mirror system, swapping a
drive a week, with 4 drives in rotation.
found one. My idea is to build a Linux box with EIDE
RAID setup to mirror a
couple BIG EIDE disks (80+ Gigabytes). Then have everything else backup to
those disks. I've figured out good ways to backup UNIX (rsync), VMS (BACKUP
to an NFS mounted disk should work), and MacOS (Retrospect can backup via
FTP). What I've not figured out is a way to backup Windows.
Windows can mount linux drives via Samba. Just use your favorite windows
backup program to back up to a file on the linux machine. I currently back
up two of my windows machines to the third in this manner.
Eric