# Robot units calculation example

> This example demonstrates how to calculate robot units requirements for different types of cloud robots (VM and Serverless) across three tenants within an organization. It considers number of machines, usage time, and robot units rates for each type of cloud robot. The total cost is calculated for a Production environment.

This example demonstrates how to calculate robot units requirements for different types of cloud robots (VM and Serverless) across three tenants within an organization. It considers number of machines, usage time, and robot units rates for each type of cloud robot. The total cost is calculated for a Production environment.

Let's understand the consumption meter for cloud robots:

* Automation Cloud™ Robots - VM: These machines consume a fixed number of robot units per month per machine. In this example, one VM Standard machine consumes 6,000 robot units/month.
* Automation Cloud™ Robots - Serverless: These machines consume robot units based on their estimated duration and machine size. The cost is calculated per minute. In this example, a Medium serverless machine consumes 4 platform units/minute.

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     Level  
     Tenant requirements  
     Required robot units amount  
     Total robot units required  
  
 
 
  
    Tenant 1 
   
      
          2 x Automation Cloud&trade; Robots - VM Standard machines  
          1 x Automation Cloud&trade; Robots - Serverless machine    Estimated duration: 600 minutes (10 hours) / month  
          Machine size: Medium  
      

    

   
      
          One Automation Cloud&trade; Robots - VM Standard machine needs 6,000 robot units/month.  
          One Automation Cloud&trade; Robots - Serverless Medium machine needs 4 robot units/min  
      

   
      
          VM: 2 x 6,000 = 12,000 robot units/month  
          Serverless: 600 x 4 =2,400 robot units/month  
          Total: 14,400 robot units/month  
      

  
  
    Tenant 2 
   
      
          1 x Automation Cloud&trade; Robots - VM Standard machines  
      

   
      
          One Automation Cloud&trade; Robots - VM Standard machine needs 6,000 robot units/month.  
      

   
      
          VM: 1 x 6,000 = 6,000 robot units/month  
          Total: 6,000 robot units/month  
      

  
  
    Tenant 3 
   
      
          5 x Automation Cloud&trade; Robots - Serverless machine    Estimated duration: 180 minutes (3 hours) daily on business days  
          Machine size: Medium  
      

    

   
      
          One Automation Cloud&trade; Robots - Serverless Medium machine needs 4 platform units/min  
      

     Because the number of business days in a month varies, we consider the maximum number of 23 business days: 
      
          Serverless: 23 x 180 x 4 =16,560 robot units/month  
          Total: 16,560 robot units/month  
      

  
  
    Organization 
   
      
          3 x Automation Cloud&trade; Robots - VM Standard machines  
          6 x Automation Cloud&trade; Robots - Serverless machine    Estimated duration: 600 (permonth)+180 minutes (per day, for 23 days)  
          Machine size: Medium  
      

    

   
      
          One Automation Cloud&trade; Robots - VM Standard machine needs 6,000 platform units/month.  
          One Automation Cloud&trade; Robots - Serverless Medium machine needs 4 platform units/min  
      

     Cost for all tenants: 14,400 + 6,000 + 16,560  Total requirement for organization: 36,960 robot units/ month