Information Technology Reference
In-Depth Information
Summary
In this chapter, we discussed the various high-availability features of hosts and virtual ma-
chines available in Red Hat Enterprise Virtualization in detail. This includes the live and
cold migration of virtual machines, automatic migration and setting up migration priority
for virtual machines, host resilience policy, and finally, defining various cluster policies,
such as even distribution and power saving, to distribute virtual workloads for better per-
formance and to save power.
In the next chapter, we will discuss advanced storage options such as using sharing disks
for high-availability cluster applications inside guest operating systems running on RHEV,
attaching direct storage LUN mapping to a virtual machine for I/O-intensive database
workloads, moving virtual machines across different storage domains, and finally, shaping
network traffic using the VNIC profile for guest operating systems and hot plugs of net-
work adapter and memory to virtual machines.
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