Hi,

     Your theory seems to be correct.  I just queried my activity log to
check how my admin schedule to copy the primary stg to copy pool is
working.  It indeed submits three separate processes and works in
parallel.

     One of my client node pushed 300Gb of data to primary pool and when
I ran backup stg, I saw this behavior.
     
      Is their a work around to copy single node data to tape pool in
parallel because I see my resource(tape) not getting fully utilized,
other than changing the primary pool to file dev class.   

   
Regards,
 
Rajesh 
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Remco Post
Sent: Tuesday, November 02, 2010 3:02 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Strange Behaviour: backup STG <primary storage
pool >

Hi Rajesh,

could it be that you only have data for a small amount of nodes in your
server? Or that there is one exceptionally large node? IIRC bacup stg
for DISK works by node, so if one process is working on the data of the
last node, the other process will finish if there is no data of other
nodes to backup. This is different for FILE and tape volumes, there
backup stg works per volume.

On 2 nov 2010, at 07:04, Lakshminarayanan, Rajesh wrote:

> Hi,
> 
>    When I trigger "backup stg <primary stg pool> <Tape copy stg pool>
> maxproc=2" command I see two processes getting submitted to backup the
> primary storage pool (Disk dev class) to my tape copy pool.
> 
>    After a while one of the processes gets completed normally while
the
> other keeps running for a while till it fully creates a copy in the
> secondary storage pool (copy). 
> 
>    I use MAXPROC=2, to speed up my work, but I don't see that
> happening. I don't have any issues with the mount point. I have the
> needful tape mount point available during this backup. 
> 
>    It would be great if some one can share your exp. Or is it a bug
> with TSM.
> 
>  My environment details:
> 
> TSM: 5.4.1.2 (tsm server running in aix 6 TL5).
> 
> 
> 
> Regards,
> 
> Rajesh 

-- 
Met vriendelijke groeten/Kind Regards,

Remco Post
r.post AT plcs DOT nl
+31 6 248 21 622