Hi Thomas                                                                      
                                                              
 This tool is "reasonably" accurate, but we do err on the side of specifying 
more processor capacity to ensure that enough headroom is provided. The
 developer of the tool says that the processor requirement for the library 
manager is actually much less than 1 core, but we "floor" our estimates at
 1 processor core to keep the estimates sane and to make sure that we are 
covered in an extreme case. You can probably get away with much less.
                                                                                
                                                              



Rob Jose
TSM OC UI Developer / L3 Support

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 06/09/2015
08:12:20 AM:

> From: Thomas Denier <Thomas.Denier AT JEFFERSON DOT EDU>
> To: ADSM-L AT VM.MARIST DOT EDU
> Date: 06/09/2015 08:14 AM
> Subject: [ADSM-L] Operations Center processor requirements
> Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> 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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