OK... Here's some answers to your questions.... 

>  Following are the questions
>  1. How come the "Used=Full" when it is not using the total capacity
of the tape
>  2. How come tape 1 can save upto 78GB and says it is full, tape2 can
save upto 49GB says it full.

Full - is a flag set on a tape to say - don't put any more on it...
Either someone has set it manually, or it hits end-of-tape, or the
system encountered errors on the device when operating the tape...
Networker will get fed up and mark the tape full... Even if theres
nothing wrong with the tape and its scsi errors on the drive.....  

But most likely you are seeing the effects of hardware compression.
You don't mention your drive types or config - but that's another reason
for the variable capacity...   Some data compresses badly, some does
very well....


>  3. How can make all those tapes ready to overwrite, and tell
networker to re-use it.

Normally - when every saveset on a tape has passed its retention period
the tape will be marked as recyclable by a periodical process *if* the
tape is not marked manual... So make sure nothing is manual and see what
happens...

If you have a tape which you wish to be recycled despite there still
being un-expired savesets on it you mark it as auto-recyclable, and you
change its mode from full or writable to recyclable.....

Nothing will happen until the next time a new tape is required for
writing, it picks one of the recyclable tapes, and re-labels it... At
that moment all the savesets get purged from the database.


If it doesn't seem to be picking your recyclable tapes and its going for
a blank one instead, then you should check your Pool configurations...
There are options for controlling whether tapes from one pool can be
relabeld to another...


NOTICE
This e-mail and any attachments are confidential and may contain copyright 
material of Macquarie Bank or third parties. If you are not the intended 
recipient of this email you should not read, print, re-transmit, store or act 
in reliance on this e-mail or any attachments, and should destroy all copies of 
them. Macquarie Bank does not guarantee the integrity of any emails or any 
attached files. The views or opinions expressed are the author's own and may 
not reflect the views or opinions of Macquarie Bank.

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the
body of the email. Please write to networker-request AT listserv.temple DOT edu 
if you have any problems
wit this list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER