User`s guide

Extended Functionality
Eaton Intelligent Power Manager (IPM) User’s Guide v1.40 P-164000289—Rev 2 133
Configuring Maintenance Mode and Live Migration with SCVMM
Maintenance Mode
In Virtual Machine Manager (VMM) 2008 R2, you can start maintenance mode for a VM host anytime that you
need to perform maintenance tasks on the physical host computer, such as applying security updates or
replacing hardware.
When you start maintenance mode on a Windows-based
host, VMM automatically does the following:
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On a stand-alone host, VMM places all operating VMs into a saved state.
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On a Windows-based host cluster that is capable of live migration, VMM provides the following options:
- Live migration of all running, highly available VMs to other hosts in the cluster, and place any operating
VMs
that are not highly available in a saved state.
- Place all operating VMs into a saved state.
NOTE Refer to Microsoft
®
Hyper-V
™
reference on 134.
Understanding Live Migration
Live migration is a Hyper-V feature in Windows Server 2008 R2. The failover clustering feature must be added
and configured on the servers running Hyper-V. Live migration allows you to transparently move operating VMs
from one node of the failover cluster to another node in the same cluster without a dropped network
connection or perceived downtime.
In addition, failover clustering
requires shared storage for the cluster nodes. This can include an iSCSI or
Fiber-Channel Storage Area Network (SAN). All VMs are stored in the shared storage area, and the running VM
state is managed by one of the nodes.
NOTE Refer to “Microsoft Hyper-V References” on page 134.
Configuration Test
To test the installation, perform a power failure on the UPS. On the Microsoft System Center Virtual Machine
Manager (SCVMM) console, verify that the corresponding Hyper-V host enters in Maintenance mode after the
“Maintenance mode timer.” Hyper-V machines must be started before the machine that is hosting the SCVMM.
The SCVMM service needs some time to refresh its status. If the starting sequence is not correct, the Hyper-V
stays in Maintenance mode.
VMware References
Eaton and Virtualization
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http://www.eaton.com/virtualization
VMware ESX Configuration
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http://www.vmware.com/support/