Release Notes

12 VMware vSphere Virtual Volumes on Dell PS Series | 2028-N-WP-V
Figure 4 Virtual machines and virtual volumes as seen in EqualLogic Group Manager
3.3 Coexisting with VMFS and migrating to Virtual Volumes
Dell PS Series SANs can simultaneously provide both traditional volumes for VMFS datastores, and storage containers
for virtual volume datastores. However, snapshots cannot be taken of a virtual machine that has virtual disks on both a
VMFS datastore and a virtual volume datastore.
A Storage vMotion operation is used to migrate an existing virtual machine from a traditional VMFS datastore to a
virtual volume datastore. This operation can be performed with the virtual machine in either running or powered off
state. Virtual machines can also be migrated from virtual volume datastore to VMFS datastores. In both cases if the
virtual machine has a snapshot, the snapshot is also migrated.
Note: Traditional volumes and virtual volumes count equally against the PS Series group volume limit of 1024
volumes.
3.4 Changes in storage policy-based management
With VASA 1.0, a concatenated string of information about a volume was that the only thing available to storage
vendors to advertise the capabilities of a volume to the vSphere administrator. This limited the number of profiles that
could be created. With VASA 2.0, which is compatible with Virtual Volumes and Virtual SAN, the ability to advertise
multiple individual capabilities about the storage exists. This enables the vSphere administrator to create granular
storage policies that contain only the capabilities needed to meet their business needs.