Thanks for all the warnings on backups. I have religiously burned a DVD
after every 12-16 CDs ripped (depending on when I had a DVD's worth) so
I have 2 physical backups of all my stuff (one being the original CDs of
course). Typically I've been ripping, encoding and tagging my collection
at a rate of about 15 CDs a day and then setting a DVD archive going
overnight while I sleep. I do a read-back verify as part of the burn
process and I am using the best DVD blanks I could get so I have a
pretty high confidence that the backups are good.

I believe that DVDs could degrade but I suspect that in 2 to 3 years
time I will probably have switched over to BlueRay or similar so at
that point I will probably refresh my backups anyway so as to reduce
the restore time. Also, because of the nature of the data I am backing
up, I wouldn't really care if I had a few localised bad blocks on a
backup, or even a few complete DVDs turned to coasters. As long as most
of them are good it would still reduce 400 hours of re-ripping an entire
collection down to about 30 hours or so to reload my entire collection
(give or take a few hours depending on how many CDs I did need to rip
from source because of DVD corruption, hopefully none) so I'm happy
with this tradeoff.

- Julian


-- 
JulianL
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