7.3

Table Of Contents
To provision successfully, the reservation must have sufficient available storage. The reservation's
storage availability depends on:
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How much storage is available on the datastore/cluster.
n
How much of that storage is reserved for that datastore/cluster.
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How much of that storage is already allocated in vRealize Automation
For example, even if the vCenter Server has storage available for the datastore/cluster, if sufficient
storage is not reserved in the reservation then provisioning fails with a "No reservation is available to
allocate..." error. The allocated storage on a reservation depends on the number of VMs (regardless of
their state) on that specific reservation. See the VMware Knowledge Base article Machine XXX: No
reservation is available to allocate within the group XXX. Total XX GB of storage was requested
(2151030) at http://kb.vmware.com/kb/2151030 for more information.
Understanding Selection Logic for Reservations
When a member of a business group create a provisioning request for a virtual machine,
vRealize Automation selects a machine from one of the reservations that are available to that business
group.
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.
A generic virtual blueprint can be provisioned on any type of virtual reservation.
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The reservation must be enabled.
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The compute resource must be accessible and not in maintenance mode.
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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.
n
The reservation must have sufficient unallocated memory and storage resources to provision the
machine.
When a virtual reservation’s machine quota, memory, or storage is fully allocated, no further virtual
machines can be provisioned from it. Resources may be reserved beyond the physical capacity of a
virtualization compute resource (overcommitted), but when the physical capacity of a compute
resource is 100% allocated, no further machines can be provisioned on any reservations with that
compute resource until the resources are reclaimed.
n
If 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.
n
If the blueprint or request specifies a location, the compute resource must be associated with that
location.
Configuring vRealize Automation
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