Hello Ron,
as soon as the nsrmmd gets an error during write, it marks the tape as full. 
This can be a problem in the connection between the server an the drives, the 
drives itself or
the tapes. In your case I think, it is a connection problem, which occurs under 
high workload. I would check the event lock of the server, often it is a 
controller problem
or a jbeck problem (I am not sure how this is written, I mean the kight 
interface between the controller and the FC cable)
Kind regrads
Rainer

Am 08.06.2012 um 13:50 schrieb Ronald Benvenuto:

> Hello All,
> 
> 
> 
> I am running Networker 7.6.1 on a windows 2003 server and am backing up to a 
> Dell ML6020 with 6 fiber channel LT04 drives.  all of my backups that use two 
> of the 6 drives will work just fine, the other four drives will start backups 
> and mark the tape as full after as little as 40GB and as much as few hundred 
> gb's but never to it's full native or compressed capacity, once it marks it 
> full i cannot append to that tape again. The only way to use it is to 
> re-label it.
> 
> 
> 
> Has anyone else seen this problem before and know how to fix it ?
> 
> 
> 
> thanks much,
> 
> 
> 
> Ron Benvenuto
> 
> Sr. System Administrator
> 
> SRI International Sarnoff
> 
> 201 Washington Road
> 
> Princeton, New Jersey 08540
> 
> Phone: 609-734-2401