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VMware vCloud Director components (1026339)

Purpose

This article outlines the various components of VMware vCloud Director.

Resolution

 
VMware vCloud Director provides the ability to build secure, multi-tenant private clouds by pooling virtual infrastructure resources into virtual datacenters and exposing them to users through Web-based portals and programmatic interfaces as a fully-automated, catalog-based service.
 
This table outlines the components:
 

Component

Description

vSphere Resources
vCloud Director relies on vSphere resources to provide CPU and memory to run virtual machines. In addition, vSphere datastores provide storage for virtual machine files and other files necessary for virtual machine operations.
vCloud Director also utilizes vNetwork Distributed Switches and vSphere port groups to support virtual machine networking. You can use these underlying vSphere resources to create cloud resources.
Cloud Resources
Cloud resources are an abstraction of their underlying vSphere resources and provide the compute and memory resources for vCloud Director virtual machines and vApps, and access to storage and network connectivity.
 
A vApp is a virtual system that contains one or more individual virtual machines, along with parameters that define operational details. Cloud resources include Provider and Organization virtual Data Centers, external networks, organization networks, and network pools. Before you can add cloud resources to vCloud Director, you must add vSphere resources.
Provider Virtual Data Centers
A Provider Virtual Data Center (PvDC) combines the compute and memory resources of a single vCenter Server resource pool with the storage resources of one or more datastores connected to that resource pool.

You can create multiple provider vDCs for users in different geographic locations or business units, or for users with different performance requirements. A PvDC is the source for Org vDCs.
 
Organization Virtual Data Centers
An Organization Virtual Data Center (Org vDC) provides resources to an organization and is partitioned from a PvDC. Org vDCs provide an environment where virtual systems can be stored, deployed, and operated. They also provide storage for virtual media, such as floppy disks and CD ROMs. A single organization can have multiple Org vDCs.
Cloud Director Networking vCloud Director supports three types of networks:
  • External networks
  • Organization networks
  • vApp networks
Some organization networks and all vApp networks are backed by network pools.
External Networks
An external network is a logical, differentiated network based on a vSphere port group. Organization networks can connect to external networks to provide Internet connectivity to virtual machines inside of a vApp.

Only system administrators create and manage external networks.
Organization Networks An organization network is contained within a vCloud Director organization and is available to all the vApps in the organization. An organization network allows vApps within an organization to communicate with each other. You can connect an organization network to an external network to provide external connectivity. You can also create an isolated organization network that is internal to the organization. Certain types of
organization networks are backed by network pools.

Only system administrators can create organization networks. System administrators and organization administrators can manage organization networks, although there are some limits to what an organization administrator can do.
vApp Networks
A vApp network is contained within a vApp and allows virtual machines in the vApp to communicate with each other. You can connect a vApp network to an organization network to allow the vApp to communicate with other vApps in the organization and outside of the organization, if the organization network is connected to an external network. vApp networks are backed by network pools.
 
Most users with access to a vApp can create and manage their own vApp networks.
Network Pools

A network pool is a group of undifferentiated networks that is available for use within an Org vDC. A network pool is backed by vSphere network resources such as VLAN IDs, port groups, or Cloud isolated networks. vCloud Director uses network pools to create NAT-routed and internal organization networks and all vApp networks. Network traffic on each network in a pool is isolated at layer 2 from all other networks.

Each Org vDC in vCloud Director can have one network pool. Multiple Org vDCs can share the same network pool. The network pool for an organization vDC provides the networks created to satisfy the network quota for an Org vDC.
 
Only system administrators can create and manage network pools
Organizations
vCloud Director supports multi-tenancy through the use of organizations. A vCloud organization is a unit of administration for a collection of users, groups, and computing resources. Users authenticate at the organization level, supplying credentials established by an organization administrator when the user was created or imported.
 
System administrators create and provision organizations, while organization
administrators manage organization users, groups, and catalogs.
 
Users and Groups An organization can contain an arbitrary number of users and groups. Users can be created by the organization administrator or imported from a directory service such as LDAP. Groups must be imported from the directory service. Permissions within an organization are controlled through the assignment of rights and roles to users and groups.
Catalogs
Organizations use catalogs to store vApp templates and media files. The members of an organization that have access to a catalog can use the catalog's vApp templates and media files to create their own vApps. A system administrator can allow an organization to publish a catalog to make it available to other organizations. Organizations administrators can then choose which catalog items to provide to their users.

Update History

11/18/2011 - Updated for product version 1.5.

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