[Networker] Parallelism Question
2009-05-04 14:17:46
I am running NW 7.3.3 on Win2K3 and would like to understand how different
parallelism settings work during backup.
I started a group manually and was monitoring its behaviour.
Here is an example:
Group has 3 clients
# of savesets are 1 (client 1), 17 (client 2) and 5 (client 3).
# of tape drives = 4
target sessions for the devices = 4
max sessions = 512
server parallelism = 16 ( 4 per device )
client parallelism = 4
savegrp parallelism = 0
max parallelism (media pool ) = 0
There were three(3) tapes available (append) in that media pool during backup
and no other groups were running.
The savesets were backup up in the following order when I kicked off the backup,
[1] Four savesets (three from client 3, one from client 2) to volume #1
[2] Four savesets (one from client 1, two from client 2, one from client 3)
to volume # 2
[3] Only one saveset from client 2 to volume #3
[4] Eleven savesets ( eight from client 2, one from client 3, two indexes)
to volume # 2
[5] Remaining five savesets from client 2 and it's index to volume # 1.
Is this the correct behaviour ?
I was expecting NW to run backup on more than one volume simultaneously.
Thanks
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