Chapter 3. Availability, Investment Protection, And Expansion; High Availability Solution; Reliability, Availability, And Serviceability (Ras) Features - IBM 610 Technical Overview And Introduction

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Availability, investment

Chapter 3.

protection, and expansion

The following sections provide more detailed information about configurations, upgrades, and

design features that will help you lower your cost of ownership.

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.

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

Dynamic Processor Deallocation

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.

The capability of Dynamic Processor Deallocation

is only active in systems with more than two

processors, because device drivers and kernel

extensions, which are common to multi-processor

and uniprocessor systems, would change their

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