Fujitsu Siemens Computers SPARC Enterprise M8000 - Manual (Page 59)

Chapter 2 What You Must Know Before Using DR 2-27
2.5 Operation Management
This section describes the premises and the actions for DR operations.
2.5.1 I/O Device Management
Upon the addition of a system board, device information is reconfigured
automatically. However, addition of the system board and the reconfiguration of
device information do not end at the same time.
Sometimes, device link in /dev directory is not automatically cleaned up by
devfsadmd
(1M) daemon. Using devfsadm(1M), you can manually clean up this
device link. See the devfsadm(1M) Solaris man page for details.
2.5.2 Swap Area
The size of available virtual memory is the sum of the size of memory mounted in
the system and the size of the swap area on the disk. You must ensure that the size
of available memory is sufficient for all necessary operations.
2.5.2.1 Swap Area at System Board Addition
By default in Solaris, the swap area is also used to store a system crash dump. You
should use a dedicated dump device, instead. See the Solaris man page
dumpadm
(1M). The default swap area used to store the crash dump varies in size
according to the size of mounted memory.
The size of the dump device used to store the crash dump must be larger than the
size of mounted memory. When a system board is added, thereby increasing the size
of mounted memory, the dump device must be reconfigured as required. For details,
see the dumpadm(1M) Solaris man page.
2.5.2.2 Swap Area at System Board Deletion
When you delete a system board, the memory of the system board is swapped to the
swap area of the disks. The available swap area is decreased by the memory size to
be deleted. So, before you execute a delete board command, check the total swap
area to verify that enough free swap space is available to hold the board's physical