ADSM-L

Re: [ADSM-L] Database size, Split to multiple instances or wait for version 6.1

2008-12-04 12:04:12
Subject: Re: [ADSM-L] Database size, Split to multiple instances or wait for version 6.1
From: Wanda Prather <wprather AT JASI DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 4 Dec 2008 12:02:15 -0500
Well, I'd say that you are doing great right now, if you can do a DB backup
of 350 G from a Windows box in an hour and 15 minutes!

The biggest problem you are likely to have, as mentioned, is the time it
takes to do the conversion to 6.1 (or in the unlikely event you have a
problem and need to do a DB audit before you get to 6.1).

Here's something that might be useful, depending on your circumstances.

If you look at the Occupancy table, it shows not only the amount of storage
occupied by your clients, but the number of objects retained for each.  Sum
the objects for each client, and sort by client in descending order:

select  node_name, cast(sum(logical_mb/1024) as decimal(10,1)) as "GB" ,
sum(num_files) as "#Objects" from occupancy where stgpool_name in (select
stgpool_name from stgpools where pooltype='PRIMARY') group by node_name
order by 2 desc.

At some of my customers, we find that there are just a handful of nodes
responsible for  30-40% of the DB objects (imaging apps are usually the
biggest offenders).  If that is the case for you, that's a logical way to
start splitting out your DB, by splitting out a handful of big (in terms of
objects) clients.  And if it's only a handful of nodes, I suspect it would
also be the way that would have the least impact on de-dup.

W




On Thu, Dec 4, 2008 at 11:18 AM, Conradt, Jeremy <
JConradt AT ashleyfurniture DOT com> wrote:

> Expiration takes about 1 hour.  DB Backup takes about 1 hour 15 minutes.
>
> Thanks,
> Jeremy
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
> Of
> Wanda Prather
> Sent: Wednesday, December 03, 2008 7:01 PM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] Database size, Split to multiple instances or wait
> for version 6.1
>
> How long does it take you now to do Expiration and DB backup?
>
>
>
> On Wed, Dec 3, 2008 at 4:24 PM, Conradt, Jeremy <
> JConradt AT ashleyfurniture DOT com> wrote:
>
> > I have a TSM server currently running version 5.3.5 on Windows 2003
> > that we plan to upgrade soon.
> > The problem I have is our database has grown to 350 GB.
> > The question I have is will version 6.1 of TSM be better capable of
> > maintaining a database this size and much larger or should I break it
> > apart?
> > I would rather keep everything together so we can make better use of
> > de-duplication that may be coming out with version 6.
> > Thanks,
> > Jeremy
> >
> >
> >
>