Users Guide

48 Administering High Availability for Hyper-V

Create a new VM, for example

HA-VM2

, and place its VHD file on the

same storage LUN that was used by

HA-VM1

Use the

Windows Failover Cluster

console to make

HA-VM2

also an HA

VM.

The failover cluster service will automatically add

HA-VM2

into the

existing Resource Group.

HA VM Resource Group Names

By default, the cluster resource groups for HA VMs are created with generic

names such as "Virtual Machine (1)" and does not inherit the names of the

VMs. This is expected behavior after the 951308 QFE is applied and was

designed to avoid naming conflicts in resource groups as well as to

accommodate the scenario of a single resource group owning multiple HA

VMs. However, administrators can manually change these Failover Cluster

Resource Group names using the Failover Clustering MMC.

Cluster Resource Group for HA VMs Reported as

"Partially Online"

When a Failover Cluster Resource Group contains more than one virtual

machine and any of the virtual machines are not in the Running state, the

status of the Resource Group will be displayed as Partially Online. Even a

Resource Group with a single HA VM may report the status of Partially

Online when any of the dependent resources of that HA VM (such as a

passthrough disk that is not hosting the boot volume of the HA VM) is in an

Offline state.

Configuring Rules for Associating Hosts to HA

VMs

Failover Clustering in Windows Server 2008 allows the administrator to set

rules on how cluster resources are managed among the nodes of the cluster.

With Hyper-V HA VMs being managed by the Failover Cluster as a cluster

resource, rules can be set for resource groups that host HA VMs as well.

NOTE: Dell strongly recommends not changing the default settings except in

special circumstances.