6.7

Table Of Contents
Working with Virtual Volumes 22
Virtual Volumes virtualizes SAN and NAS devices by abstracting physical hardware resources into logical
pools of capacity. The Virtual Volumes functionality changes the storage management paradigm from
managing space inside datastores to managing abstract storage objects handled by storage arrays.
This chapter includes the following topics:
n
About Virtual Volumes
n
Virtual Volumes Concepts
n
Virtual Volumes and Storage Protocols
n
Virtual Volumes Architecture
n
Virtual Volumes and VMware Certificate Authority
n
Snapshots and Virtual Volumes
n
Before You Enable Virtual Volumes
n
Configure Virtual Volumes
n
Provision Virtual Machines on Virtual Volumes Datastores
n
Virtual Volumes and Replication
n
Best Practices for Working with vSphere Virtual Volumes
n
Troubleshooting Virtual Volumes
About Virtual Volumes
With Virtual Volumes, an individual virtual machine, not the datastore, becomes a unit of storage
management, while storage hardware gains complete control over virtual disk content, layout, and
management.
Historically, vSphere storage management used a datastore-centric approach. With this approach,
storage administrators and vSphere administrators discuss in advance the underlying storage
requirements for virtual machines. The storage administrator then sets up LUNs or NFS shares and
presents them to ESXi hosts. The vSphere administrator creates datastores based on LUNs or NFS, and
VMware, Inc.
273