On Thu, 21 Mar 2002, Jon LaBadie wrote:
>You won't. After running a while amanda will spread the level 0's over
>all the dump days. So if your once a week tape "now" gets 40GB and your
>daily "incrementals" now get 2, each will average about 8 GB daily.
Actually it's even better than that. Each tape should average a full
40GB. Amanda will do its best to fill each and every tape to capacity,
promoting as many full dumps per run as possible. If you have 40GB of
data and a 40GB tape drive, you should get a full set of level 0s on
every run. If you have 60GB of data and a 40GB tape drive you should
see a full dump of everything every 2 days, with incrementals in
between, etc. It's really cool.
>Some might suggest that if you can't justify the expense of tapes
>then the value/cost of losing the data must be low.
That's a valid point to consider. Also worth noting is that if you are
concerned about raw $/GB in terms of tape you can't go wrong with
DAT-based formats. They may not be the most advanced, robust tape
technologies out there, but DDS ain't bad and the media sure is cheap.
We use AIT at work but I use DDS3 for all of my personal backups at home
(I also use amdump as my alarm clock each morning, as soon as that thing
starts taping I find I can no longer sleep ;-).
--
Brandon D. Valentine <[EMAIL PROTECTED]>
Computer Geek, Center for Structural Biology
"This isn't rocket science -- but it _is_ computer science."
- Terry Lambert on [EMAIL PROTECTED]
