Actually it sounds like you have the problem found already
It imho has to be a network or data supply to tape problem
Maybe you can test with a local backup using bigasm to create a dummy fille or 
set of files

met vriendelijke groeten / With kind regards

Frank Terveen
--------------------------
Sent via BB

----- Oorspronkelijk bericht -----
Van: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
Aan: NETWORKER AT LISTSERV.TEMPLE DOT EDU <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
Verzonden: Tue Jul 27 08:44:27 2010
Onderwerp: [Networker] Backup on storage node tape drive slows downwith 
parallelism

Hi Everyone,

I was trying to configure my tape library on an offsite storage node. We are 
using Netwrker 7.4.4 on win. I was able to successfully configure and backup 
runs. We have two tape drives in the library. But when i set the parrallelism 
and run in loads the tape on two drives but the backup speed slows down. But if 
it is set to 1 and backed up only on 1 drive then it is fast. For eg: If for 1 
tape drive it is 11 Mbps , for two tape drives it gets spliitted and it becomes 
even 1/3 of original speed that is around 3 Mbps on each drive. Iam using a 
SDLT tape drive on Storage Tek L20. It can be a network issue but iam not sure. 
But still is there any way to set the parallelism and it does not affect the 
speed of tape drive. That is to get the original speed of 11 Mbps on both tape 
drives simultaneously.

Your suggestions would be valuable.

Regards,
Kurian

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