Removing Or Installing The Nvram Module; Determining Your Power Supply Needs - Sun Microsystems Sun Enterprise 450 Product Notes

Removing or Installing the NVRAM
Module
Caution – Before removing or installing an NVRAM module on the main logic
board, be sure to disconnect the board from its power connector. Failure to do so
could corrupt the information stored in the NVRAM module and adversely affect
operation of the system. To disconnect the main logic board from its power
connector, loosen the captive screws that secure the board to the system rear panel,
and pull the handles at the rear of the board until the board is fully disengaged from
its power connector.

Determining Your Power Supply Needs

The minimum configuration of the Sun Enterprise 450 server now includes two
power supplies, which provide sufficient power for all supported configurations.
Note – If your system configuration requires redundant power, you may need to
add a third power supply.
Sun Enterprise 450 Server Product Notes en-15