I have found next disadvantages in TSM 6.1:

1) installation is much more complicated. I think this is coming together with 
DB2. I was not able to install TSM 6.1 in manual mode. I have used GUI 
assistant to complete all tasks. In my opinion, it is not good, because I am 
not a beginner in TSM (10 years!);

2) TSM 6.1 requires much more disk resources. Database is much bigger (not only 
+40% declared in documentation). Using de-duplication + reclamation produces 
2-3 times more logs.
In addition, new requirements came for archived logs. Usually archived logs are 
bigger than logs. There is automatic cleaning procedure for archived logs, 
which requires 2 or 3 full backups of database. As a result, archived logs are 
kept at least for 3 days in case of using full backup for database every day. 
Just imagine if you are using weekly full backup for database!!!???. Note I did 
not use mirroring for logs and archived logs. With mirroring it will be full 
crash at all from disk space requirements;

3) TSM 6.1 requires much more CPU and memory resources than TSM 5.5 and not 
only for de-duplication. During testing I am running backups and copies without 
de-duplication (numpr=0) and than de-duplication + reclamation after completion 
of backups and copies.
In addition to dsmserv process there is db2sync process which is usually much 
heavier than dsmserv;

4) I have found very strange TSM behavior during some commands like "delete 
volume ... discarddata=yes". Command reports successful completion, but process 
is still running with heavy load from db2sync. I am not sure, but it can be a 
bug.

I hope this information will be interesting for TSM admins. I will deeply 
appreciate any kind of information (good or bad) about TSM 6.1.X. It looks, we 
need to implement TSM 6.1 because of de-duplication

Grigori G. Solonovitch

Senior Technical Architect

Information Technology  Bank of Kuwait and Middle East  http://www.bkme.com

Phone: (+965) 2231-2274  Mobile: (+965) 99798073  E-Mail: G.Solonovitch AT bkme 
DOT com

Please consider the environment before printing this Email


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Zoltan Forray/AC/VCU
Sent: Wednesday, June 03, 2009 4:59 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] TSM 6.1 Installation Problems

Definitely wait for 6.1.2 or a possible 6.1.1.1 release I have been
"promised" to address a problem that was possibly introduced in 6.1.1.

I agree - way too unstable for production.  Watch out for the hidden
storage/disk requirements plus the need for 3-FULL DB backups before it
purges archived transaction logs!



From:
Grigori Solonovitch <G.Solonovitch AT BKME DOT COM>
To:
ADSM-L AT VM.MARIST DOT EDU
Date:
06/03/2009 09:47 AM
Subject:
Re: [ADSM-L] TSM 6.1 Installation Problems
Sent by:
"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>



You are completely right. It is much more difficult to install TSM 6.1 in
comparison with any previous version. Upgrade is going to be very painful
and long as well.
I have installed TSM 6.1 under AIX 5.3 - it is very unstable.
I have upgraded to TSM 6.1.1 - it looks a little bit better.
I am testing 6.1.1 now, but I am going to wait for TSM 6.1.2 before
production upgrade.

Mike wrote:

" The installation of TSM 6.1 is very time-consuming and it makes me
insecure if thinking about an 5.5 update.

Has anybody else installed or updated the newest release?"

Grigori G. Solonovitch

Senior Technical Architect

Information Technology  Bank of Kuwait and Middle East
http://www.bkme.com

Phone: (+965) 2231-2274  Mobile: (+965) 99798073  E-Mail:
G.Solonovitch AT bkme DOT com

Please consider the environment before printing this Email

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
mfrank
Sent: Wednesday, June 03, 2009 11:58 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] TSM 6.1 Installation Problems

The installation of TSM 6.1 is very time-consuming and it makes me
insecure if thinking about an 5.5 update.

Has anybody else installed or updated the newest release?

Mike

+----------------------------------------------------------------------
|This was sent by michael.frank AT data-protector DOT com via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------

Please consider the environment before printing this Email.

"This email message and any attachments transmitted with it may contain
confidential and proprietary information, intended only for the named
recipient(s). If you have received this message in error, or if you are
not the named recipient(s), please delete this email after notifying the
sender immediately. BKME cannot guarantee the integrity of this
communication and accepts no liability for any damage caused by this email
or its attachments due to viruses, any other defects, interception or
unauthorized modification. The information, views, opinions and comments
of this message are those of the individual and not necessarily endorsed
by BKME."

"This email message and any attachments transmitted with it may contain 
confidential and proprietary information, intended only for the named 
recipient(s). If you have received this message in error, or if you are not the 
named recipient(s), please delete this email after notifying the sender 
immediately. BKME cannot guarantee the integrity of this communication and 
accepts no liability for any damage caused by this email or its attachments due 
to viruses, any other defects, interception or unauthorized modification. The 
information, views, opinions and comments of this message are those of the 
individual and not necessarily endorsed by BKME."