SIRIS, ALTO, and NAS: Error: "This product model cannot support adding %count% more protected systems."



When attempting to pair an agentless system through the Datto SIRIS Protect a System Wizard, you see the error message "This product model cannot support adding %count% more protected systems," where %count% represents the number of systems that you tried to add.


  • Datto SIRIS
  • Virtual SIRIS 


You are attempting to protect a system with a Datto appliance subject to agent limits, and the number of protected systems that you are attempting to add exceeds the agent limit of the device.


1. Reduce the number of active and archived agents on the Datto appliance to create enough agent slots to pair the new systems. If you cannot do so, contact your Datto Sales Executive for upgrade assistance.

2. Attempt to pair the virtual system again.

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