Hello Experts,
We are using NBU 7.0.1 on win-2k8 R2 standard as Master/Media server which has attached TL-4000 Library with 4 LTO-5 tape drivers and configured 13th Client severs and all the backup are running very very slow at minimum 277 Kb/sec to Maximum 2560 Kb/sec, and i splited the backup selections and enabled Multistreaming and Multiplexing also still same problem, and by refering some document from "Mark" i did some chnages still same problem could any once suggest me how to increase the speed of the backup's ?
and NIC is set to 100 MB Full.
On each Media Server ensure that Program Files\veritas\netbackup\db\config\ exists (it doesnt by default)
in that directory create two files with no extension called SIZE_DATA_BUFFERS and NUMBER_DATA_BUFFERS
Open then using notepad and in the SIZE one put 262144 and in the NUMBER one put 32
Save the file (Making sure notepad doesnt add .txt on the end)
No need to re-start any services they take immediate effect next time you run a backup.
If you back up to disk you can use similar ones - just create another two files with _DISK on the end, you can use the same value for the number but a good value for the size for disk is 1048576
Hope this helps