Note – (Note 1) Before replacing a system board, you must know the division type of the replacement-target PSB and the configurations and operation status of all domains to which all XSBs on the PSB belong.

If the division type of the replacement-target PSB is Quad-XSB and the XSBs on the replacement-target PSB belong to multiple domains, you must consult with all administrators of the relevant domains in advance to adequately adjust the method of replacing the system board.

If the division type of the replacement-target PSB is Uni-XSB, its replacement does not affect any other domains. However, prior adjustment may be required when the replacement-target system board is used as a floating board for multiple domains or hardware replacement work may affect other domains

Note – (Note 2) If the DR processing executed by the deleteboard(8) or addboard(8) commands fails, the target system board cannot be restored its the previous status. Identify the cause of failure based on the error messages output by the commands and Solaris OS messages, and then take appropriate corrective action. Note that some errors require the domain to be rebooted.

Note – (Note 3) If a system board is forcibly deleted from a domain by the deleteboard(8) command with the -foption specified, a serious problem may occur in a process bound to the CPU or accessing an I/O device. For this reason, you should avoid using the -foption in normal DR operations. If you must use the deleteboard(8) command with the -foption specified, be sure to check the status of the domain and application processes before and after execution.

Note – (Note 4) To execute the addboard(8) command to add a system board by DR, the system board must already be registered in DCL. Use the showdcl(8) command to check whether a system board is registered in the DCL. To register a system board in the DCL, use the setdcl(8) command.

To replace hardware, you must set the system board to the state where it is assigned to the domain or to the state where it is placed in the system board pool by using the deleteboard(8) command.

Chapter 3 DR User Interface 3-23