The command can be different depending on which version of the software you are 
running. In the latest version it is:
 
option set marker-type {nw1 | cv1 | tsm1 | tsm2 | eti1 | hpdp1 | none} Set
the tape marker type for data from NetWorker; CommVault; Tivoli Storage Manager
on Linux, Windows and AIX; Tivoli Storage Manager on Solaris; HP NonStop with
ETI-NET EZX-BackBox; or HP Data Protector.
 
The problem is there are two options for tsm, so you have to test to see which 
one gets triggered for you (we are running on aix and ended up with setting 
tsm2 which doesn't seem to match with the doc), and it only applies to newly 
written data. Best bet is to work with the data domain tech people.
 
cory
 
 
Cory Heikel
Tivoli Systems Administrator
Hershey Medical Center
(717) 531-7972

>>> William Jean <wjean AT GLASSHOUSE DOT COM> 10/10/2007 10:03 AM >>>
Can you share the details of the tape marker setting?

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Cory Heikel
Sent: Wednesday, October 10, 2007 9:38 AM
To: ADSM-L AT VM.MARIST DOT EDU 
Subject: Re: [ADSM-L] TSM and Data Domain

We are averaging about 11/1 with data domain on a mix of data. One thing
we found was the need to update a setting for tsm tape marker parameter,
which almost doubled our performance.


Cory Heikel
Tivoli Systems Administrator
Hershey Medical Center
(717) 531-7972

>>> Dirk Kastens <Dirk.Kastens AT UNI-OSNABRUECK DOT DE> 10/10/2007 2:45 AM >>>
Kenneth,

Bradberry, Kenneth schrieb:
> I am currently looking at Data Domain as a possible VTL and
> de-duplication vender.  Can anyone share there experiences with Data
> Domain with TSM?

We just tested a DataDomain machine with TSM. The results were not as
good as we expected. It shows a very good compression with database
backups (Exchange backups should also work well) but not with normal
user data, like homedirectories or web data.

--
Regards,

Dirk Kastens
Universitaet Osnabrueck, Rechenzentrum (Computer Center)
Albrechtstr. 28, 49069 Osnabrueck, Germany
Tel.: +49-541-969-2347, FAX: -2470