PRIMECLUSTER Installation and Administration Guide 4.1 (for Solaris(TM) Operating System)
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Part 1 Planning> Chapter 2 Site Preparation

2.3 Determining the Cluster System Operation Mode

To ensure that the cluster system to be built operates efficiently, you need to determine the number of nodes and an appropriate operation mode.

PRIMECLUSTER allows you to configure multiple cluster applications. The operation mode is determined depending on how you set up the cluster applications in the cluster system.

The main operation modes are listed below:

Classification

Operation mode

Number of cluster applications

Number of nodes

Standby operation

1:1 standby

1

2

Mutual standby

2 to (number of nodes)

2 to (number of supported nodes)

N:1 standby

2 to (number of nodes - 1)

3 to (number of supported nodes)

Cascade

1 to (number of nodes)

3 to (number of supported nodes)

Priority transfer

2 to (number of nodes - 1)

3 to (number of supported nodes)

N:M standby

2 to (number of nodes - 2)

4 to (number of supported nodes)

Scalable operation

Scalable

1 to (number of nodes)

1 to (number of supported nodes)

High-availability scalable operation

1 to (number of nodes)

2 to (number of supported nodes)

Note that failover does not occur when a node is switched off. When designing the system, consider using an uninterruptible power supply (USP).

Down2.3.1 Standby Operation
Down2.3.2 Scalable Operation

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