Netbackup buffer tuning question

Hi,

If I don't have the SIZE_DATA_BUFFERS & NUMBER_DATA_BUFFERS files does that mean I am using the default values?

If so, what are they? I am experiancing slow duplication from disk to tape, and I am trying to troubleshoot. See snippet below, I don't know if it's normal for these delays.

Windows 2003 NBU 7.5.0.3

 

22/01/2013 13:03:59 - awaiting resource XXXXXSTU-3Drives - No drives are available

22/01/2013 13:06:31 - granted resource PJ4762

22/01/2013 13:06:31 - granted resource HP.ULTRIUM3-SCSI.000

22/01/2013 13:06:31 - granted resource XXXXX-STU-3Drives

22/01/2013 13:06:33 - Info bptm(pid=7424) start            

22/01/2013 13:06:33 - started process bptm (7424)

22/01/2013 13:06:35 - Info bptm(pid=7424) start backup           

22/01/2013 13:06:36 - Info bpdm(pid=11036) started            

22/01/2013 13:06:36 - started process bpdm (11036)

22/01/2013 13:06:36 - Info bpdm(pid=11036) reading backup image          

22/01/2013 13:06:36 - Info bpdm(pid=11036) using 30 data buffers         

22/01/2013 13:06:36 - begin reading

22/01/2013 13:06:38 - Info bptm(pid=7424) media id PJ4762 mounted on drive index 0, drivepath {2,0,1,0}, drivename HP.ULTRIUM3-SCSI.000, copy 2

22/01/2013 13:06:38 - Info bptm(pid=7424) INF - Waiting for positioning of media id PJ4762 on server XXXXX for writing.

22/01/2013 13:21:21 - end reading; read time: 00:14:45

22/01/2013 13:21:21 - begin reading

22/01/2013 13:22:59 - Info bptm(pid=7424) waited for full buffer 47068 times, delayed 61934 times    

22/01/2013 13:23:00 - end reading; read time: 00:01:39

22/01/2013 13:23:01 - Info bpdm(pid=11036) completed reading backup image         

22/01/2013 13:23:04 - Info bpdm(pid=11036) using 30 data buffers         

22/01/2013 13:23:04 - begin reading

22/01/2013 13:37:15 - end reading; read time: 00:14:11

22/01/2013 13:37:15 - begin reading