2 Power Systems Enterprise Servers with PowerVM Virtualization and RAS
1.1 High availability in today’s business environments
Availability is a well-established concept in today’s IT environments. Tremendous growth in
system capabilities, along with business demands for around the clock operations, has put
increased demands on efforts to provide the highest levels of system availability.
IBM Power Systems™ servers are especially designed to help achieve high availability;
however, the need for planned downtime is required for periodic maintenance (for both
hardware and software) and cannot be completely eliminated. Even though both types of
outages affect the overall availability of a server, we need to understand the distinctions
between pla ...