Richard,

it all depends on your situation. If you're going to use the unload/load 
feature of TSM, you'll need to do it regularly. Otherwise, over time, 
you'll loose the benefits of the unload/load process.

However, if you setup a routine to do the unload/load perhaps once a year, 
you will get a benefit out of using this feature.

When we made the unload/load of the 160GB database, we not only saw the 
database shrink in its usage, but also gained alot of performance. This 
performance benefit is actually not degrading that quickly, which, for us, 
made the unload/load process worth the time.

Best Regards

Daniel Sparrman
-----------------------------------
Daniel Sparrman
Chef Utveckling & Drift
Exist i Stockholm AB
Propellervägen 6B
183 62 TÄBY
Växel: 08 - 754 98 00
Mobil: 070 - 399 27 51



Richard Sims <rbs AT BU DOT EDU> 
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
2004-10-08 16:28
Please respond to
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>


To
ADSM-L AT VM.MARIST DOT EDU
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Subject
Re: AW: DSMSERV UNLOADDB






On Oct 8, 2004, at 9:47 AM, David Nicholson wrote:

> Hi All,
>         I am surprised by the significant reduction is Pct Utilized. I
> thought in previous discussions that Unload/Reload had minimal impact
> on
> utilization. I have (2) TSM 5.2.2 servers on AIX with 40GB db's that
> are
> 90% used. I haven't done a unload/reload since there creation 3 years
> ago...do I have an opportunity here?

The previous discussions I recall stressed minimal benefit over any
significant period of time, which is to say that the risk and outage
involved in the procedure isn't worth it.

   Richard Sims