Administrator Guide

VMware vSphere and Live Volume
64 Dell EMC SC Series: Synchronous Replication and Live Volume | CML1064
Live Volume configured with Restore Automatically enabled
8.14 VMware DRS/HA and Live Volume
VMware Distributed Resource Scheduler (DRS) is a cluster-centric configuration that uses VMware vSphere
vMotion
®
to automatically move virtual-machine compute resources to other nodes in a cluster. This is
performed without local, metro, or stretched-site awareness. In addition, vSphere is unaware of storage
virtualization that occurs in Live Volume. When Live Volume is configured with a vSphere stretched cluster, it
is a best practice to keep virtual machines running at the same site as their primary Live Volumes.
Additionally, it is recommended to keep virtual machines that share a common Live Volume datastore
together at the same site. This ensures that compute and storage resources remain local to the vSphere host
running the virtual machine(s). If DRS is activated on a vSphere cluster with nodes in each site, DRS could
automatically move some of the virtual machines running on a Live Volume datastore to a host that resides in
the other data center.
In vSphere 4.1 and later, DRS host groups and VM groups can be used to benefit a vSphere Metro Storage
Cluster environment.
• VM groups: Virtual machines that share a common Live Volume datastore can be placed into VM
groups. Movement of virtual machines and management of their respective Live Volume datastore,