TSM server 6.3.0 on Windows
TDP for SAP 6.3 with Oracle on Linux (BACKINT, without RMAN).

The TDP for SAP redbook SG24-7686 says:

Backup retention control
The backup retention policy can configured either on the Tivoli Storage Manager
server side by the archive copy group parameter RETVER (the number of days
the version is to be kept) or on the side of Tivoli Storage Manager for ERP by
specifying the parameter MAX_VERSIONS in the configuration profile 
(init<SID>.utl).


Does anybody have strong opinions or reasons to use one method over the other?
(Doing it on the TSM server seems simpler to me, rather than visiting a dozen 
client machines to modify the .utl file.)