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Sun Cluster 2.2 Software Installation Guide

Selecting an Install Location for Sun Cluster HA for Informix

You can install the Informix binaries either on a physical host's local disks or on the shared multihost disks (logical host). Use Table 7-1, which shows the advantages and disadvantages of each install location, to determine the install location that best fits your needs.

Table 7-1 Informix Install Locations Comparison

Install Location 

Advantages 

Disadvantages 

Multihost Disks 

Eases administration - only one copy must be maintained 

  • Sacrifices redundancy

  • In some cases, compromises availability

  • In cases of switchover or accidental removal of Informix binaries, may cause Informix to be unavailable

  • Requires a mirror, so disk space must be doubled

Local Disks 

Increases redundancy - each node is a copy 

  • Increases administrative overhead - multiple copies must be maintained