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

Removing 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 Ultra Enterprise 450 server now includes two
power supplies, which provide sufficient power for all supported configurations.
If your system configuration requires redundant power, you may need to add a third
power supply.
About the System Power Requirements Worksheet
The following information is an addition to the section "System Power
Requirements Worksheet" in the Ultra Enterprise 450 Server Owner's Guide. If you are
calculating your power needs for systems that will include one or more 400-MHz
CPU modules and the SunCD
information for your calculations.
Line
No. Option
CPU Options
400 MHz CPU with
4 MB Ecache and DC/DC
converter
Internal Storage Device Options
SunCD 32 CD-ROM
™
32 CD-ROM, you will need the following
+3.3 Total
VDC Amps @
Qty Amps 3.3 V
5.0

Ultra Enterprise 450 Server Product Notes

Total +12
+5 VDC Amps @ VDC
Amps 5 V Amps
5.6
0.55 0.61
Total
Amps @
12 V
1-5