Dell UPS 4200R - Manual (Page 114)

Applying Extended Functionality 115
Configuration Test
To test the installation, please perform a power failure on the UPS and check on vSphere client that the
corresponding ESX/ESXi host enters in Maintenance mode after the “Maintenance mode timer.”
VMware vCenter High Availability
After the High Availability (HA) Cluster feature is enabled, VMware disables the automatic startup and
shutdown functionality when a hypervisor is shut down.
Dell MUMC features for HA mode:
• Dell MUMC will continue to move the VM from one server to the others, if all servers are powered by
different UPSs with different power source (see Figure 99).
Figure 99. HA Mode with Dell MUMC
Dell MUMC continues to protect the hypervisor also when power fails.
Due to the deactivation of the automatic startup and shutdown, at the end of utility failure sequence, all
virtual machines will power-off.
To prevent this VM from powering off, you have two solutions:
• Configure the VMware ESX/ESXi nodes in Dell MUMC to shut down the VMs (remote shutdown of
the virtual machine setting).
• Install a Dell MUMC on each VM, even if it is not an optimized solution. You have to take care that
when VMs move, the Dell MUMC still links to the same UPS power source.
NOTE: For more information about the deactivation of the Automatic Startup/Shutdown when creating a VMware HA
Cluster, refer to “Creating a vSphere HA Cluster” in the links provided by “vSphere SDK for Perl” on page 117.
0119_2-Dell MUMC UG.book Page 115 Saturday, November 2, 2013 4:59 PM