7.3

Table Of Contents
When you destroy a machine that has a static IP address, its IP address is made available for other
machines to use. Unused addresses might not be available immediately because the process to reclaim
static IP addresses runs every 30 minutes.
If you are using a third-party IPAM provider, vRealize Automation deletes the associated IP addresses by
using the vRealize Orchestrator workflow in the third-party IPAM provider plug-in or package.
Configuring Reservations and Reservation Policies
A vRealize Automation reservation can define policies, priorities, and quotas that determine machine
placement for provisioning requests.
Reservation policies restrict machine provisioning to a subset of available reservations. Storage
reservation policies allow blueprint architects to assign machine volumes to different datastores.
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.
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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.
Reservations
You can create a vRealize Automation reservation to allocate provisioning resources in the fabric group to
a specific business group.
For example, you can use reservations to specify that a share of the memory, CPU, networking, and
storage resources of a single compute resource belongs to a particular business group or that certain
machines be allocated to a specific business group.
Note Storage and memory that are assigned to a provisioned machine by a reservation are released
when the machine to which they are assigned is deleted in vRealize Automation by the Destroy action.
The storage and memory are not released if the machine is deleted in the vCenter Server.
You can create a reservation for the following machine types:
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vSphere
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vCloud Air
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vCloud Director
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Amazon EC2
Configuring vRealize Automation
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