IBM 6.00E+01 manual High availability solution

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Chapter 3. Availability, investment protection, expansion, and accessibility

The following sections provide more detailed information about configurations, upgrades, and design features that will help you lower your cost of ownership.

3.1 High availability solution

For even greater availability and reliability, the Models 6C1 and 6E1 also support IBM® High Availability Cluster Multiprocessing (HACMP) software, the leading UNIX disaster recovery clustering solution. This solution, when combined with applications that meet IBM clusterProven standards, provides a superior base for high availability, an essential ingredient of e-commerce.

Serial port 3 supports HACMP heartbeat functions. It is required to be at firmware versions CLT01334 (System) and ct011130 (Service) for this support.

3.2 Reliability, availability, and serviceability (RAS) features

RAS features, such as redundant power supplies or N+1 hot-plug fans, are important for the availability of your server. A few RAS features of the Models 6C1 and 6E1 are covered in the next sections. At the time of writing there are other additional RAS features available in some specific pSeries systems that are not supported in the Models 6C1 and 6E1. They are listed as follows:

Chipkill	Chipkill™ memory is a technology from IBM that
	protects a server from any single memory chip
	failure and multibit errors from any portion of a
	single memory chip. Memory chip failures can
	cause server system crashes that can result in the
	permanent loss of business data.

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