Johannes Tax <[EMAIL PROTECTED]> writes:
> We have been using buta with ADSM to back up our AFS volumes for about 3
> months now. After some initial capacity problems with the ADSM server (not
> enough tape drives), it's working quite well. We back up around 50K volumes.
> Full backups with four parallel streams takes about 24 hours; incrementals
> take 2 - 4 hours. We're adding more tape drives and tape changers so we can
> parallelize things further to try to reduce the full backup time to 16 hours
> or less.
This brings up an interesting point....
Does everybody using AFS or DFS notice that it takes *forever* to backup
lots of volumes (filesets in DFS-speak)? We're using DFS and the
per-fileset overhead is very high. Tar'ing the data is super-speedy but
using the DFS backup system takes ages.
I've complained to IBM (or DCE/DFS vendor) that the backup system is so
slow that it's broken but they weren't impressed :)
We'd really love to see a AFS/DFS-aware tar! I bet that would be speedy
and would probably meet our needs just fine.
