NAS Configuration Examples

Configuration Examples

A few examples of what happens during a fail over using LifeKeeper for Linux NAS Recovery Kit are provided below.

Configuration 1: Active/Standby Configuration Example

In this configuration, Server 1 is considered active because it is running the NAS Recovery Kit software and has imported (mounted) the file system from the NAS device. Server 2 does other processing. If Server 1 fails, Server 2 gains access to the file system and uses the LifeKeeper secondary hierarchy to make it available to clients.

Configuration Notes:

• The NAS software must be installed on both servers.

• The file system has been imported from a NAS device.

• Server 2 should not access files and directories on the NAS device while Server 1 is active.

*Note: In an active/standby configuration, Server 2 might be running the NAS Recovery Kit, but does not have any other NAS resources under LifeKeeper protection.

Configuration 2: Active/Active Configuration Example

An active/active configuration consists of two or more systems actively running the NAS Recovery Kit software and importing file systems from NAS device(s).

Configuration Notes:

• The NAS software must be installed on both servers.

• Initially, Server 1 imports a file system and Server 2 imports a different file system. In a switchover situation, one system can import both file systems.