Fabric administrators create storage reservation policies to allow tenant administrators and business group managers to assign the volumes of a virtual machine to different storage profiles.
When you assign the volumes of a virtual machine to a different storage profile, tenant administrators and business group managers can control and use storage space more effectively. For example, they might deploy the operating system volume to a slower, less expensive storage profile and the database volume to a faster storage profile.
Tenant administrators and business group managers can assign a single storage profile or a storage reservation policy that represents multiple storage profiles to a volume. When they assign a single storage profile to a volume, vRealize Automation uses that storage profile at provisioning time. When they assign a storage reservation policy to a volume, vRealize Automation uses one of its storage profiles at provisioning time.
A storage reservation policy is a tag applied to one or more storage profiles by a fabric administrator to group storage profiles that have similar characteristics, such as speed or price. A storage profile can be assigned to only one storage reservation policy at a time, but a storage reservation policy can have many different storage profiles. A fabric administrator creates a storage reservation policy and assigns it to one or more storage profiles. A tenant administrator or business group manager assigns the storage reservation policy to a volume in a virtual blueprint. When a user requests a virtual machine that uses the blueprint, vRealize Automation uses the storage reservation policy specified in the blueprint to select a storage profile for the machine’s volume.