Sun Cluster 2.2 Software Installation Guide

Choosing an Install Location for Lotus Binaries

You can install Lotus Domino primary server binaries and partitioned server binaries on either the local disk of each cluster node or on a shared disk. If you choose to install Lotus Domino binaries or partitioned server binaries on the local disk, you must install them on all cluster nodes. Always install data directories on the shared disk.

Installing the binaries on the shared disk eases administration and consumes less disk space, but increases down time during application upgrades, because the application must be brought down for the duration of the binary upgrade.

Installing the binaries locally on each node preserves high availability during failover, and also reduces downtime during future upgrades of the application. You can upgrade the binaries on a node that is not currently hosting the application, switch the application over to that node, then upgrade the binaries on the original node. The application remains available except for during the brief switchover period.