ADSM-L

Re: Question about Space Reclamation..

2005-08-30 10:13:40
Subject: Re: Question about Space Reclamation..
From: Roark Ludwig <Roark.Ludwig AT SUNHEALTH DOT ORG>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Tue, 30 Aug 2005 07:13:25 -0700
Thanks to all of you..

With a weekend of reading and some experimentation, I believe that the
problems have been overcome.  I might still have lots of questions, but you
all have been very helpful.

Roark







             "Maurice van 't
             Loo"
             <tsm@COMPARECOMPU                                          To
             TERS.NL>                  ADSM-L AT VM.MARIST DOT EDU
             Sent by: "ADSM:                                            cc
             Dist Stor
             Manager"                                              Subject
             <[email protected]         Re: [ADSM-L] Question about Space
             .EDU>                     Reclamation..


             08/30/2005 04:10
             AM


             Please respond to
             "ADSM: Dist Stor
                 Manager"
             <[email protected]
                   .EDU>






True ;-)

I use Operational Reporting and Access with a bunch of advanced selects (on
imported tables) to monitor and the command admin client to enter the
commands... that's cheaper... more Dutch ;-)

Regards,
Maurice

----- Original Message -----
From: "Bos, Karel" <Karel.Bos AT ATOSORIGIN DOT COM>
To: <ADSM-L AT VM.MARIST DOT EDU>
Sent: Tuesday, August 30, 2005 12:20 PM
Subject: Re: [ADSM-L] Question about Space Reclamation..


Hi,

Just one thing to add. If the command line isn't your friend, tools like
tsmmanager can help you a lot. Just checkout the website (and look at
the pricing) and download the demo.

Regards,

Karel
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Maurice van 't Loo
Sent: dinsdag 30 augustus 2005 11:05
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Question about Space Reclamation..

Hoi Roark,

If you cannot affort to upgrade to 5.3.x, you can also use more
tapepools.
So you can make a tapepool for very small nodes, with collocation off,
so it still uses less tapes and a tapepool for the big nodes with
collocation on.
If neccesary, you can make more tapepools, but remember, if you want to
use a diskpool (and most sites do) you need a diskpool for each
tapepool.
But best thing is to upgrade to 5.3.x and learn the command line
commands :-), so you can use collocation groups.

Collocation on copypools is most of the times nonsens... Even if you
want it in case of a big disaster, the costs are enormous and fast
restores per machine is not the biggest issue at that moment if you can
use a library with enoufh drives to restore multiple machines
simmultanious.

You cannot change a "filling" tape to "full", but you can use "move data
{volname} stg={diskpool}" to move the data of the tape quickly to disk.
If you set the access of the tapes you want to clean to readonly first,
the data will be migrated to the filling tapes you don't want to clean.

Regards,
Maurice van 't Loo


----- Original Message -----
From: "Roark Ludwig" <Roark.Ludwig AT SUNHEALTH DOT ORG>
To: <ADSM-L AT VM.MARIST DOT EDU>
Sent: Friday, August 26, 2005 1:56 AM
Subject: Re: [ADSM-L] Question about Space Reclamation..


> I have been handed a TSM system in the past week that has been running
for
> a year.  IT has collocation = yes for TAPEPOOL and COPYPOOLS.   this
system
> is running TSM 5.2.2.
>
> We have run out of tapes as the setting for collocation (yes) is
> trying to use a tape for each node (as I understand it, ,,please
> correct me if I am wrong)..
>
> We have decided that since we have about  80 volumes with less then 1%

> utilized and 20 or so with large utilization %'s to set COLLOCATION=NO

> for the TAPEPOOL and COPYPOOLS.
>
> We are expecting to add another set of nodes and don't wish to consume
more
> of our volumes (with small percent utilization) as we add the nodes.
>
> Question ..
>
> Will this setting COLLOCATION=NO stop the addition of volumes?  (I
> expect the answer is YES,, please correct me if I am wrong.)
>
> Now to the second question.
>
> I see no easy way to have Space Reclamation condense the volumes
> included in the two pools as it will only process "FULL" volumes.
> (Again Please
jump
> in here).
>
> QUESTION:  is it acceptable to set the status from "FILLING" to "FULL"

> for the volumes with low percentage utilized to force Space
Reclamation ?
>
> OR
>
> is there an easier way to accomplish the GOAL of reducing the number
of
> volumes needed for the pools?    (given that we have set
COLLOCATION=NO)
> or should we simply wait out the natural filling of the volumes and
> allow normal Space Reclamation as time proceeds?
>
>
> Has anyone done this in the past?
>
> How have others dealt with this??
>
>
> Thanks for any input.
>

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