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• Map VNFC to Instance Type
  • One or more VNFCs (e.g. vCPE VGW) could map to an instance type
    • Use Case: Residential Broadband vCPE (Approved)
    • https://github.com/onap/demo/blob/a19bd423c1e4d2f5552bab090ba2650c38fa7192/heat/vCPE/vgw/base_vcpe_vgw.yaml
  • Convert to appropriate instance type based on intent //e.g. "Infrastructure Resource Isolation for VNF" may result in a different instance type if the cloud owner supports "Burstable QoS"
• For each cloud region // Public cloud could have different costs in different geographic locations
  • net_value_cost = net_value_cost + cost_instance_type // cost per instance type is based on policy (for R3, it is picked up from Multi Cloud configuration file)
  • net_value_cost = net_value_cost + cost_intent //e.g. "Infrastructure High Availability (HA) for VNF" may have additional cost
  • Continue R2 Plan
    • Private Clouds (OpenStack based)
      • Capacity check per Tenant (OpenStack Project)
        • returns yes or no 
    • Public Clouds or Other Clouds
      • Capacity check per tenant 
        • return yes always //assumption: public cloud has infinite capacity
  • If infra capacity is finite (Private cloud or Public cloud with reserved instances) // e.g. object of interest is OpenStack Project with a quota (upper limit) for cpu, mem and local disk
    • Option A: (potentially supportable with OpenStack based clouds, other clouds to be investigated)
      
      • normalized_cpu_per_object = (current_cpu_used_object + instance_type_cpu*number_of_instances_of vnfc)/total_cpu_object
        • if normalized_cpu_per_object > 1, capacity check failed
      • normalized_mem_per_object = (current_mem_used_object + instance_type_mem*number_of_instances_of_vnfc)/total_mem_object
        • if normalized_mem_per_object > 1, capacity check failed 
      • normalized_disk_per_object = (current_disk_used_object + instance_type_disk*number_of_instances_of_vnfc)/total_disk_object
        • if normalized_disk_per_object > 1, capacity check failed 
      • net_value_capacity = normalized_infra_capacity = wcpu*normalized_cpu_per_object + wmem*normalized_mem_object + wdisk*normalized_disk_per_object // wcpu, wmem, wdisk are specified in a multi-cloud configuration file; wcpu + wmem + wdisk = 1
    • Option B: (under study)
      • normalized_instances_per_object = (current_used_reserved_instances + number_of_instances_of_vnfc)/total_reserved_instances
      • net_value_capacity = normalized_instances_per_object

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• Convert to appropriate instance type based on intent //e.g. "Infrastructure Resource Isolation for VNF" may result in a different instance type if the cloud owner supports "Burstable QoS"
  • Example
    • VNFC with "Guaranteed QoS"
      • vCPU (Min/Max) - 16, Mem (Min/Max) - 32GB  
    • Same VNFC with "Burstable QoS", 25% oversubscription
      • vCPU (Min) - 16, Mem (Min) - 32GB
      • vCPU (Max) - 20, Mem (Max) - 40GB
        
        

Cloud Resource Partitioning for Differentiated QoS (Combined with Previous)

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