Architecting a vCloud Director Solution : vCloud Director Design : 7.3 Organization Virtual Data Centers : 7.3.1 Non-Elastic Allocation Pool VDC
   
7.3.1 Non-Elastic Allocation Pool VDC
The following are non-elastic allocation pool VDC design considerations:
• Allocation pool Org VDC is constrained by the size of primary resource pool (a cluster of provider VDC).
• Upon creation of non-elastic allocation pool Org VDC, a child resource pool is created with CPU and memory limits set to Org VDC allocation and reservations set to guaranteed percentage x allocated value.
• Tenant cannot over allocate memory.
• Tenant can over allocate vCPUs (CPU usage is limited by Org VDC CPU allocation).
• VM memory overhead is charged to the tenant.