Fujitsu Siemens Computers SPARC Enterprise M8000 - Manual (Page 61)

Chapter 2 What You Must Know Before Using DR 2-29
For example, when a kernel memory board with memory mirror mode enabled is
deleted or moved, kernel memory is moved from the kernel memory board to
another system board. Kernel memory is moved normally even if memory mirror
mode is disabled for the move-destination system board. However, this operation
results in lowered reliability of memory on the new kernel memory board.
You must properly plan and decide the setting of memory mirror mode by fully
considering the requirements for the domain configuration and operations.
2.5.5 Capacity on Demand (COD)
DR works the same on COD boards as on other system boards, but standard COD
restrictions, such as licensing, still apply.
For detailed information on COD boards, refer to SPARC Enterprise
M4000/M5000/M8000/M9000 Servers Administration Guide.
2.5.6 XSCF Failover
An XSCF failover might prevent a DR operation from completing. To check, log in to
the active XSCF, check the status of the system board and, if necessary, repeat the DR
operation.
2.5.7 Kernel Memory Board Deletion
If an XSCF failure or failover occurs during the Copy-rename phase of a
deleteboard
(8) or moveboard(8) operation, the Solaris OS may panic and display
the following message:
If you see this message, log in to the XSCF again to check status. You may have to
reboot the Solaris OS and, on the XSCF, check system board status, specify the kernel
memory board, and repeat the DR operation.
Irrecoverable FMEM error error_code