Hi Thomas,
I agree, don't even think about using dedup at 6.2.5.  Too many performance and 
data handling bugs.
We're deduping 4.5-5 TB a day (Windows TSM server) and even had issues at 6.3.4.

Have seen no issues at all so far at 6.3.5 (and it should be easy for you to 
get there from 6.2.5).


W  

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Thomas Denier
Sent: Friday, December 05, 2014 2:56 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] TSM level for deduplication

My management is very eager to deploy TSM deduplication in our production 
environment. We have been testing deduplication on a TSM 6.2.5.0 test server, 
but the list of known bugs makes me very uncomfortable about using that level 
for production deployment of deduplication. The same is true of later Version 6 
levels and TSM 7.1.0. TSM 7.1.1.000 was an utter disaster. Is there any 
currently available level in which the deduplication code is really fit for 
production use?

IBM has historically described patch levels as being less thoroughly tested 
than maintenance levels. Because of that I have avoided patch levels unless 
they were the only option for fixing crippling bugs in code we were already 
using.
Is that attitude still warranted? In particular, is that attitude warranted for 
TSM 7.1.1.100?

Has IBM dropped any hints about the likely availability date for TSM 7.1.2.000?

Thomas Denier
Thomas Jefferson University Hospital


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