The Spectrum UIM(Unified Infrastructure Manager) synchronization synchronization creates creates duplicate models in SPECTRUM.
This issues is resolved with Spectrum_10.01.01.PTF_10.1.116a.
Spectrum will now reconcile ESX hosts with existing ESX host or Nimsoft Host server models only. If an ESX host is reconciled with a Nimsoft server model then the existing Nimsoft Host server model will be deleted an a new ESX model will be created for that ESX host. This newly created model will be a part of both of the Virtualization and Server hierarchies in SPECTRUM.