Administrator Guide

VMware vSphere and Live Volume
65 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
can then be performed at a containerized-group level rather than at an individual virtual-machine
level.
• Host groups: Hosts that share a common site can be placed into host groups. Once the host groups
are configured, they can represent locality for the primary Live Volume.
VM groups can be assigned to host groups using the DRS Groups Manager. This will ensure all virtual
machines that share a common Live Volume datastore are consistently running from the same datastore. The
virtual machines can be vMotioned as a group from one site to another. After a polling threshold is met, SC
Series storage can perform an automatic role swap of the primary Live Volume datastore to the site where the
VMs were migrated. The infrastructure can also be designed with separate DRS-enabled clusters existing at
both sites, keeping automatic migration of virtual machines within the respective site where the primary Live
Volume resides. In the event of a Live Volume role swap, all virtual machines associated with the Live Volume
can be vMotioned from the site A cluster to the site B cluster.
vSphere High Availability (HA) is also a cluster-centric configuration. In the event of a host or storage failure,
HA will attempt to restart virtual machines on a host candidate within the same cluster that may be local or
stretched in a vMSC deployment. In a non-uniform storage configuration, if an outage impacts primary Live
Volume availability and Live Volume automatic failover occurs, vSphere HA can be configured to restart
impacted virtual machines on the surviving array.
Live Volume data access in a non-uniform vSphere environment