Networker

[Networker] Parallelism Question

2009-05-04 14:17:46
Subject: [Networker] Parallelism Question
From: psoni <networker-forum AT BACKUPCENTRAL DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Mon, 4 May 2009 14:09:44 -0400
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

+----------------------------------------------------------------------
|This was sent by soni.parth AT gmail DOT com via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER