Table 37. Minimum/Maximum Current Rating Configurations
Board
I/O carrier
Minimum Configuration
I/O carrier, I/O riser board
Maximum Configuration
I/O carrier, I/O riser board, PCI adapter boards (10 at maximum load)
Profusion carrier
Memory carrier (each)
Front panel
Midplane
Peripheral bay
Profusion carrier, processor mezzanine board (one), Pentium III Xeon processor (one), A450NX processor termination modules (three)
Memory carrier, 128 MB DIMM (one) (one memory carrier only)
Front panel
Midplane
One diskette drive, one
Profusion carrier, processor mezzanine boards (two), Pentium III Xeon processor
(eight at FMB maximum load), cache coherency boards (two at 4 Tag configuration)
Memory carrier, 256 MB DIMM (16)
Front panel
Midplane
One diskette drive, one
Calculating Power Usage
Use the worksheet in Table 38 to calculate the total DC power used by your server configuration.
The documentation that comes with each
To calculate the total combined wattage for your server:
1.List the current for each board and device in the appropriate voltage level column in the table.
2.Add the currents in each column of the table.
3.Multiply the voltage by the total current to get the total wattage for each voltage level.
4.Add the total wattage for each voltage level to arrive at a total combined power usage on the power supply.
194 | Power System: Description/Calculating Power Usage |
