User's Manual

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.