Limitations & Considerations of LPAR management server

If you use an LPAR as a CSM management server, consider the following limitations. Note that these limitations apply only if the CSM management server is an LPAR and not a separate physical machine:

1. The CSM management server can be brought down inadvertently by a user on the HMC who deactivates the LPAR. Even if a user does not have access to the CSM management server, a user with access to the HMC can power off the management server or move resources such as CPU or I/O from the LPAR.
2. If the firmware needs to be upgraded, the LPAR management server might also go down when the system is quiesced. However, bringing the CEC back up returns the system to normal.
3. There is no direct manual hardware control of the CSM management server. You must use the HMC for power control of the management server.
4. An LPAR management server cannot have an attached display. This limitation can affect the performance of your CSM GUIs.
5. In machines such as the p690, you can assign a CD-ROM drive to one LPAR on the CEC, (the management server LPAR).
6. Do not define an LPAR management server as a managed node.
7. A cluster that is installed and configured can still function even if the management server goes down. For example, cluster applications can continue to run, and nodes in the cluster can be rebooted. However, tasks including monitoring, automated responses for detecting problems in the cluster, and scheduled file and software updates cannot occur while the management server is down.
8. If the cluster contains a 9076 SP Node or 7026 server, you cannot define an LPAR management server for the cluster.