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 HACMP for System p
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- Helps reduce unplanned outages and improve system availability
- Offers ease of use through configuration wizards, auto-discovery and Web-based interface
- Allows backup systems to be located at a remote site for geographic disaster recovery
- Provides failover on demand to enable system maintenance without service interruption
- Offers new support for Linux® to extend the HACMP™ legacy across System p™ environments
Need for high availability
Throughout the day—often 24 hours a day—IT systems are hard at work. But what happens when the systems or applications fail? It is widely documented that unplanned outages increase the total cost of IT ownership. Although hardware has become very reliable, research shows that unplanned outages still occur and typically result from operator error, software bugs, environmental conditions and so forth—problems that reliable hardware cannot prevent. Even planned outages for application and system maintenance can impact business performance or delay necessary updates. Service availability is critical to a reliable, cost-effective IT infrastructure. At the same time, clients want solutions that simplify the IT environment and enable the flexibility to respond to changing business needs.
IBM’s premier availability solution
IBM High Availability Cluster Multiprocessing V5.4 (HACMP V5.4) helps protect critical business applications from failures. For over a decade, the HACMP solution has been providing reliable monitoring, failure detection and automated recovery of business application environments to backup resources, utilizing IBM’s suite of disk families on the back-end.
HACMP software can be configured to react to hundreds of system events, including problems that are not severe enough to interrupt proper system operation (such as process failure or exhaustion of system resources). HACMP monitors, detects and reacts to such conditions, maintaining service availability during random, unexpected software problems. Up to 32 nodes running the UNIX® operating system (OS), or up to eight nodes running the Linux OS, can participate in an HACMP cluster, making it ideal for environments requiring scale-out growth with rock-solid reliability. HACMP runs on System p servers (and additionally on System i™ servers) and leverages System p virtualization capabilities by dynamically increasing system resources to accommodate takeover workloads. When running in a small micro-partition on a backup server, it enables the automatic increase in system resources to accommodate the primary application in the event of a failover.
The HACMP solution can also virtually eliminate planned outages by transferring users, applications and data to backup systems during scheduled maintenance. HACMP clusters can be configured to meet complex and varied application availability and recovery needs.
HACMP V5.4 introduces first-time support for Linux on POWER™, extending its robust capabilities and heritage to the Linux environment. Users can now leverage their existing skills in HACMP technology to manage their entire System p infrastructure—whether they are using a single server with AIX® (IBM’s industrial-strength UNIX), Linux, or a virtualized environment running partitions with both AIX and Linux. As users extend their System p environment through virtualization, they can continue to leverage their existing investments in high availability—and manage their availability all from one single user interface. Support for Linux will include the base capabilities for reliable monitoring, failure detection and automated recovery, available with AIX today.
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