Chapter 2 Setting Up XSCF 2-123
Note – (1) Memory mirroring requires twice the amount of memory domain used
for operation. If the PSB is a Quad-XSB type in M8000/M9000 servers, memory
mirroring cannot be used. In M4000/M5000 servers, memory mirroring can be used
regardless of whether the system board is a Uni-XSB or Quad-XSB.
Note – (2) The add/delete/replace operations are done by field engineers (FEs). If a
command is performed, the maintenance guidance is displayed. FEs will use the
device check, select, add, and delete operations in the guidance window. For
information about how to handle and operate these devices, see the Service Manual
for your server and any manual written for FEs.
Dividing a PSB Into XSBs
â– Command operation
1. Use the showfru(8) command to display information on dividing a PSB into
XSBs.
2. Use the setupfru(8) command to divide a PSB into XSBs.
Delete device The device, such as a system board, is deleted. deletefru (Note 2)
Replace device The device, such as a system board, is replaced. replacefru (Note 2)
Diagnosis Diagnose the system board.
The specified system board must be unconfigured from the
domain or the domain in which the system board is
configured must be powered off.
testsb
XSCF> showfru –a sb
Device Location XSB Mode Memory Mirror Mode
sb 00 Uni No
sb 01 Uni No
sb 02 Uni No
<Example> Specify PSB#00 for a Quad-XSB.
XSCF> setupfru –x 4 sb 00
TABLE 2-26 System Board Configuration (Continued)
Item Description Shell Command Remarks
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