I can't answer your question, but I would raise another -- do tapes
suffer from the same "bit rot" that floppy disks were notorious for?
That is, over time (even with no use), does the magnetic signal fade?
CD-Rs and CD-RWs, which use photosensitive dyes, also supposedly suffer
from loss of data over time. I guess what it comes down to is how long
you intend to keep these backups around before discarding (CD-R) or
overwriting them. I could imagine that tape and floppies, where the
magnetic medium is in actual contact with the heads, would suffer wear
(physical loss of the medium) over time, making them even less reliable
than when new. How about the dyes on CD-RWs -- are they perfectly
reversible, or is there a hysteresis effect where the signal eventually
gets too weak after repeated writes?
The bottom line is that you may want to look at more than the raw
unrecoverable error rate when picking a backup -- how many times will
the medium be read or rewritten, and how long will it last just sitting
on the shelf?
On 9/30/2010 8:41 AM, Matthias Johnson wrote:
I know several people must be involved in backups so I thought I might
pose this question. What backup media do you / would you use for a
business?
_______________________________________________
Mid-Hudson Valley Linux Users Group http://mhvlug.org
http://mhvlug.org/cgi-bin/mailman/listinfo/mhvlug
Upcoming Meetings (6pm - 8pm) MHVLS Auditorium
Oct 6 - Creating Browser Extensions for Firefox and Chrome
Nov 3 - Open Source Hardware: Bugs, Beagles and Beyond
Dec 1 - IBM's Open Client Deployment
