5.5

Configure the Allocation Model
Configure the allocation model to specify the amount of provider virtual datacenter resources to allocate to
the organization virtual datacenter.
Procedure
1 Select the allocation model options.
Not all of the models include all of the options.
Option Action
CPU allocation
Enter the maximum amount of CPU, in GHz, to allocate to virtual
machines running in the organization virtual datacenter. This option is
available only for Allocation Pool and Reservation Pool allocation models.
CPU resources guaranteed
Enter the percentage of CPU resources to guarantee to virtual machines
running in the organization virtual datacenter. You can overcommit
resources by guaranteeing less than 100 percent. This option is available
only for Allocation Pool and Pay-As-You-Go allocation models. The
default value for Allocation Pool is 50 percent, and the default for Pay-As-
You-Go is 20 percent. For an Allocation Pool allocation model, the
percentage guarantee also determines what percentage of the CPU
allocation is committed for this organization virtual datacenter.
vCPU Speed
Enter the vCPU speed in GHz. Virtual machines running in the
organization virtual datacenter are assigned this amount of GHz per
vCPU. This option is available only for a Pay-As-You-Go allocation model.
Memory allocation
Enter the maximum amount of memory, in GB, to allocate to virtual
machines running in the organization virtual datacenter. This option is
available only for Allocation Pool and Reservation Pool allocation models.
Memory resources guaranteed
Enter the percentage of memory resources to guarantee to virtual
machines running in the organization virtual datacenter. You can
overcommit resources by guaranteeing less than 100 percent. This option is
available only for Allocation Pool and Pay-As-You-Go allocation models.
The default for Allocation Pool is 50 percent, and the default for Pay-As-
You-Go is 20 percent. For an Allocation Pool allocation model, the
percentage guarantee also determines what percentage of the memory
allocation is committed for this organization virtual datacenter.
Maximum number of VMs
Enter the maximum number of virtual machines that can be created in the
organization virtual datacenter.
2 Click Next.
Example: Configuring an Allocation Model
When you create an organization virtual datacenter, vCloud Director creates a vSphere resource pool based
on the allocation model settings you specify.
Table 3‑1. How Allocation Pool Settings Affect Resource Pool Settings When Single Cluster Allocation Pool
is Enabled
Allocation Pool
Setting
Allocation Pool
Value Resource Pool Setting Resource Pool Value
CPU Allocation 25GHz CPU Limit 25GHz
CPU % Guarantee 10% CPU Reservation 2.5GHz
Memory Allocation 50 GB Memory Limit 50GB
Memory % Guarantee 20% Memory Reservation 10GB
vCloud Director Administrator's Guide
34 VMware, Inc.