I agree with Wanda.  Any kind of modern library and tape technology adds
very little time to the restore.  WELL, ok, the costly ones, anyway.  My 1TB
NT fileserver (I know, I know) lives on 99 primary pool tapes right now.
Collocate=filespace, so I'll be doing 3 restores at the same time, assuming
even distribution, and assuming every tape must be mounted during the
restore, that's about 33 mounts per filespace, or, assuming a 60 second
mount, an additional half hour due to mounts.  I'm willing to bet that's not
my bottleneck.  STK 9840, STK Powderhorn 9310 (6000 slot library), ACSLS 6
(library manager), DTELM 6.1 (external library manager for TSM to talk to)

I can really see no point in doing full backups except to give management a
warm fuzzy and justify buying more network.

How about the rest of you?  What mount times are you seeing with your
libraries and how many tapes does your largest box live on?  SHOW
VOLUMEUSAGE NODENAME is a quick way to eyeball it.  It's an unsupported
command, so I assume no liability if it brings your server down.

Alex Paschal
Storage Administrator
Freightliner, LLC
(503) 745-6850 phone/vmail