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Table Of Contents
A business group can have multiple reservations on one endpoint or reservations on multiple endpoints.
The allocation model for a reservation depends on the allocation model in the associated datacenter.
Available allocation models are Allocation Pool, Pay As You Go, and reservation pool. For information
about allocation models, see thevCloud Director or vCloud Air documentation.
In addition to defining the share of fabric resources allocated to the business group, a reservation can
define policies, priorities, and quotas that determine machine placement.
Understanding Selection Logic for Cloud Reservations
When a member of a business group creates a provisioning request for a cloud machine,
vRealize Automation selects a machine from one of the reservations that are available to that business
group. Cloud reservations include Amazon, OpenStack, vCloud Air, and vCloud Director.
The reservation for which a machine is provisioned must satisfy the following criteria:
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The reservation must be of the same platform type as the blueprint from which the machine was
requested.
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The reservation must be enabled.
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The reservation must have capacity remaining in its machine quota or have an unlimited quota.
The allocated machine quota includes only machines that are powered on. For example, if a
reservation has a quota of 50, and 40 machines have been provisioned but only 20 of them are
powered on, the reservation’s quota is 40 percent allocated, not 80 percent.
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The reservation must have the security groups specified in the machine request.
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The reservation must be associated with a region that has the machine image specified in the
blueprint.
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The reservation must have sufficient unallocated memory and storage resources to provision the
machine.
In a Pay As You Go reservation, resources can be unlimited.
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For Amazon machines, the request specifies an availability zone and whether the machine is to be
provisioned a subnet in a Virtual Private Cloud (VPC) or a in a non-VPC location. The reservation
must match the network type (VPC or non-VPC).
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For vCloud Air or vCloud Director, if the request specifies an allocation model, the virtual datacenter
associated with the reservation must have the same allocation model.
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For vCloud Director or vCloud Air, the specified organization must be enabled.
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Any blueprint templates must be available on the reservation. If the reservation policy maps to more
than one resources, the templates should be public.
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If the cloud provider supports network selection and the blueprint has specific network settings, the
reservation must have the same networks.
If the blueprint or reservation specifies a network profile for static IP address assignment, an IP
address must be available to assign to the new machine.
Configuring vRealize Automation
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