Re: [ADSM-L] Moving diskpool data

instead of migrate stg diskpool2 low=0
use migrate stg diskpool2 low=50

That will get you a little past 250GB.  (50%),  assuming the data is
spread evenly over a large amount of nodes.
Otherwise, you will just have to cancel the process once you free up
enough space.

Migrate will move the data based on node name and not by the volume, so
you might end up with the same number of volumes used in diskpool2, just
with a less percentage utilized.  Since you mention now that you want to
free up only half of the volumes, "move data" would be the better
solution.

Identify which volumes you want to remove
(choose half the volumes with the lowest pct_utilized, or maybe choose all
the volumes disk25.dsm-disk50.dsm)
put them in a text file
run a loop against that text file with move data commands to move each one
to the new pool.


Regards,
Shawn
________________________________________________
Shawn Drew





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mariobehring AT YAHOO DOT COM

Sent by: ADSM-L AT VM.MARIST DOT EDU
06/10/2009 04:50 PM
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Re: [ADSM-L] Moving diskpool data






Hi,

Another question...DISKPOOL1 and DISKPOOL2 are, each one, of 500GB size. I
need to free about 250GB only. What should be the best way to accomplish
this using the migrate apporach.

Mario



________________________________
From: Howard Coles <Howard.Coles AT ARDENTHEALTH DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Sent: Wednesday, June 10, 2009 5:34:53 PM
Subject: Re: Moving diskpool data

Move data may work, but migrate would work better.  Is this a File Class
pool, or a disk storage pool?  Set DISKPOOL1 as the "next storage pool"
for DISKPOOL2, and then kick off a migration.  You can throttle it by
setting the lowmig percentage to something that wouldn't take too long,
and then do it little bit at a time.  Or just set lowmig=0 and let it
run.

Examples:
Move data diskpool2vol recons=y stgpool=diskpool1 maxproc=1
Or
Update stg diskpool2 next=diskpool1 migprocess=2 (or however many you
want to run)
Migrate stg diskpool2 lowmig=0 (or the number of percentage you want to
migrate down to).

I'm sure others will have alternate ways, but these should work.

See Ya'
Howard


> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf
> Of Mario Behring
> Sent: Wednesday, June 10, 2009 3:18 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: [ADSM-L] Moving diskpool data
>
> Hi list,
>
> I have a two disk storage pools in use, diskpool 1 and diskpool2, with
> 50 volumes (disk01....disk50.dsm) created in each pool...all in use.
>
> I need to free disk space, so I want to move all client data from
> DISKPOOL2 to DISKPOOL1. Most volumes have usage between 12 and 20%.
How
> can I perform this action without loosing any client data?
>
> Can I use the MOVE DATA command?
>
> This is TSM 5.4.1.0 running on a Windows box.
>
> Any help is appreciated.
>
> Mario


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