Sun Microsystems Netra CT 410, Service Manual

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6-6 Netra CT Server Service Manual • February 2007
3. You can only remove a board if all of the LEDs are in the following states:
■
Amber Okay to Remove LED on the system status panel is on
■
Green Power LED on the system status panel is off
■
Blue Hot-swap LED on the board is on
Do not remove any board from the system if any of the LEDs are in a different
state from those listed here.
6.1.1.2 Rules and Restrictions for Hot-Swapping the Host Board
Following are the rules and restrictions you must understand before hot-swapping a
host CPU board:
1. You must have the alarm card and system controller board installed in the Netra
CT server before you can hot-swap the host CPU board.
2. When you remove a host CPU board from a server while the server is running,
the CompactPCI board is disabled, which means that the connection with all I/O
boards installed in the server is lost. Once the CompactPCI bus is disabled,
MCNet is disabled in the system.
After you install the host CPU board back into the server, CompactPCI bus is
enabled and attempts to connect to all occupied board slots.
Satellite CPU boards are unaffected by the disabling of the CompactPCI bus; they
continue to function as stand-alone processors when you hot-swap a host CPU
board.
3. If a host CPU is at the OpenBoot prompt (the
ok
prompt) and you want to hot-
swap the host CPU board, you must power off the host CPU slot through the
alarm card.
To power off the host CPU slot in a Netra CT server, access the alarm card and
through the alarm card command line interface enter:
Refer to the Netra CT Server System Administration Manual for more information
about accessing the alarm card.
Use the
poweron
command to power on the host CPU board after you install the
replacement host CPU board.
cli> poweroff host