Awesome tips Kens Many thanks  Sent from my iPhone
Can anyone tell me how to use the SRM Designer workbench to size a multi-region setup?...ie Main Vapp sits in one datacenter but will have collector/s in many data centers.  The designer workbench is a great tool but seems to work on the assumption that all collectors and all devices are essentinally in the same spot so just loading all the cumulative device metrics will not work.  While I would guess I could run it for every region using the worksheets to have it size out collectors, that would not only be cumbersome but i would not then take into effect the rollup needed for potential required additional  backend expansion.  Also, can someone tell me if there is a 4.X version of designer workbench available to customers and/or partners as the only version publicly available appears to be 3.7  many thanks  john J
Is there a way to use SRM workbench for multi-region config