Computing Resources Used in this Tutorial

As discussed earlier, two nodes will be configured in a network to complete tasks in this tutorial.

Please refer to the LifeKeeper for Linux Release Notes as well as the resource plan for the resource(s) to be protected (e.g., Oracle). Check to ensure that the correct operating system is selected and that the appropriate resources (e.g., disk space, memory, CPU, etc.) are available.

*Note: Although this guide focuses on clusters that use local replicated storage, LifeKeeper clusters can also be built using certified shared storage solutions. If shared storage is to be leveraged in the cluster please refer to http://docs.us.sios.com/spslinux/9.5.1/en/topic/storage-and-adapter-configuration.

It is important to understand that two disks will be needed for each node. The first disk is used to boot the system (this has an operating system and the applications including LifeKeeper installed), while the other disk will be configured to replicate data from the “active” node to the “standby” node (note that the direction of data replication will change once a “switchover” occurs).

*Note: The device name such as /dev/sda may vary based on the environment.

This guide assumes that the following resources are attached to each of the nodes:

!As SIOS is not able to make resource recommendations, please refer to the application vendor (e.g., SAP) in order to ensure that the correct resources are provisioned to run a particular application.