We recently had an IBM presentation on the future of TSM. The presenter told us 
that Operations Center was going to change our minds about needing a third 
party management facility for TSM (we currently use TSMManager). My management 
has asked me to check on the requirements for installing Operations Center. I 
found an IBM tool for estimating Operations Center resource requirements at:

http://www-01.ibm.com/support/docview.wss?uid=swg21641684&aid=1

I requested estimates for a configuration with Operations Center on a separate 
server. The Operations Center host is predicted to need a tenth of a processor 
core. Each TSM instance is predicted to need at least one processor core to 
support the Operations Center. The estimate for the hub instance sometimes 
reaches 1.1 cores, depending on the estimates of administrator activity levels.

We have three production TSM server instances (one of them a dedicated library 
manager) split across two z10 systems with two IFL's each. The predictions from 
the IBM tool imply that interaction with the Operations Center will consume all 
of the processor capacity on the system with the library manager and half of 
the processor capacity on the other system.

Are the estimates from the IBM tool reasonably accurate?

Thomas Denier
Thomas Jefferson University
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