Its actually not 350 GB.  The actual used size is:

Available Assigned   Maximum   Maximum    Page     Total      Used   Pct
Max.
    Space Capacity Extension Reduction    Size    Usable     Pages  Util
Pct
     (MB)     (MB)      (MB)      (MB) (bytes)     Pages
Util
--------- -------- --------- --------- ------- --------- --------- -----
-----
  350,000  340,000    10,000    57,580   4,096 87,040,00 72,203,13  83.0
83.1
                                                       0         6 

The DB resides on 7 - 15K fiber channel drives in a Raid5 configuration
with 2 GB/s Fiber connection.
Also the Log resides on a separate lun on a separate controller.
Also during this time basically nothing else is happening on the system.

The tape drive is LTO3.
If I backup the DB while multiple migration or reclamation processes are
running then the DB backup is significantly slowed down.
I have also attached the output of the last DBBackup for your reference
and for the doubters.  
I actually estimated the time and I was a little high on it.  I can't
give you the output from an expire because my log files have already
been replaced but here is the last run's time output.

C:\Program Files\Tivoli\tsm\baclient>time /t 
12:16 PM
C:\Program Files\Tivoli\tsm\baclient>dsmadmc -id=scriptrun
-password=****** expire inventory wait=yes
1>c:\scripts\logs\07-expire.txt 
C:\Program Files\Tivoli\tsm\baclient>time /t 
01:12 PM

Jeremy


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Bos, Karel
Sent: Thursday, December 04, 2008 10:45 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Database size, Split to multiple instances or wait
for version 6.1

Ok, 350GB tsm db backing up in 1 hour? How did you get it that fast? 

Regards,

Karel

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Conradt, Jeremy
Sent: donderdag 4 december 2008 17:19
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Database size, Split to multiple instances or wait for
version 6.1

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
>
>
>

28-dbbackup.txt
Description: 28-dbbackup.txt