3.1 Consuming vCloud Services
The following vCloud service offerings apply to both private and public vCloud, but each has a different impact on consumption. Choose the service offering that best supports your use cases.
Basic service offering (unreserved
pay-per-use class)
– Designed for quick-
start pilot projects and workloads,
such as software testing,
that do not need reservations or
guaranteed
performance.Committed service offering (subscription model) – P
rovides reserved compute resources with the ability to burst above committed levels if additional capacity is available. It offers predictable performance by reserving resources for workloads within a multitenant
infrastructure while enabling access to more resources as they become available.
Dedicated service offering – Provides dedicated compute resources
, sometimes known as
a virtual private cloud. It offers predictable performance by reserving dedicated resources. This service offering
can help to support SLAs
for Tier 1 applications. Under this service offering, e
nd users
with appropriate privileges have flexibility in modifying
compute allocations to the vApps and virtual machines.
Service classes are designed to help consumers move their workloads to a vCloud. Any existing VMware virtual machine or virtual application (vApp) can be run with little or no modification in a public vCloud. Compatibility with existing enterprise VMware deployments is a key design objective. There is no requirement to deploy a private vCloud to realize the benefits of vCloud computing because any VMware-based virtualized infrastructure is compatible.
All vCloud consumption models are fundamentally based on vCloud Director allocation models, regardless of the name or branding attached to a given service offering.