[rescue] backup software

Geoffrey S. Mendelson gsm at mendelson.com
Wed Aug 6 11:56:42 CDT 2003

Kevin wrote:
> Amanda?

Amanda has IMHO two fatal flaws. 

1. It needs a disk buffer for the tape.  If you have a 200 gig tape
   (yes I used to get 195 gig on a LTO tape), you need at least that much disk.
   If you want to write 2 tapes a night, you 400 gig.

2. It backups up files in a random sequence for example, if you have 
   a file that never changes, it will be backed up once a month if you
   are set up for monthly backups. Which day it does the backup is not
   easily predictable.

At my previous job, we went through 6-10 lto tapes a weekend and another
6-10 during the week. Some weeks had large data updates, some had large
programing updates which required a lot less to backup.

It was a very strange system. We were using HP dataprotector (aka omniback)
running on a solaris system as the "controller". The actual backup was
done on a linux system. We did it that way as we did not have the
correct scsi controler on the Sun and the controler software did not
run on linux.


Geoffrey S. Mendelson gsm at mendelson.com 972-54-608-069
Icq/AIM Uin: 2661079 MSN IM: geoffrey_mendelson at hotmail.com (Not for email)
Carp are bottom feeders, koi are too, and not surprisingly are ferrets.

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