ADSM-L

Re: [ADSM-L] Strange Behaviour: backup STG <primary storage pool >

2010-11-11 10:46:56
Subject: Re: [ADSM-L] Strange Behaviour: backup STG <primary storage pool >
From: Leandro Mazur <leandromazur AT GMAIL DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 11 Nov 2010 13:46:17 -0200
Rajesh, you can set the COPYSTG option in your primary storage pool.

On Tue, Nov 2, 2010 at 6:19 AM, Lakshminarayanan, Rajesh <
Rajesh.Lakshminarayanan AT dfs DOT com> wrote:

> 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
>



--
__________________________________
Leandro Mazur

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