Upgrading Sun OTP Version 1.1 to Sun OTP Version 2.0

You can upgrade from Sun OTP version 1.1 to version 2.0 using the standard, quantum leap, or live upgrade method.

• Standard Upgrade – Shuts down the cluster before upgrading the cluster nodes. Restart the cluster after all the nodes are fully upgraded.

• Quantum Leap Upgrade – Divides the cluster into two groups of nodes. Bring down one group of nodes and upgrade them. The other group of nodes continues to provide services. After you complete upgrade of the first group of nodes, switch services to those upgraded nodes. You can then upgrade the remaining nodes and boot them back into the rest of the cluster. The cluster outage time is limited to the amount of time needed for the cluster to switch over services to the upgraded partition.

• Live Upgrade – Retains the previous cluster configuration until you have upgraded all nodes and commit to the upgrade. If the upgraded configuration causes a problem, revert to your previous cluster configuration until you can rectify the problem.