Configuration
Max. ac Power
(W)
Redundant Power
Nodes I/O Drawers BPR/BPA
With Line Cord
Feature Codes
8688, 8689
With all Other
Line Cord
Feature Codes
7 3 3 17500 No Yes
8 3 3 19489 No Yes
9 3 3 21477 No Yes
10 3 3 23466 No No
4 4 3 12727 Yes Yes
5 4 3 14716 Yes Yes
6 4 3 16705 Yes Yes
7 4 3 18693 No Yes
8 4 3 20682 No Yes
5 5 3 15909 Yes Yes
6 5 3 17898 No Yes
Unit Emergency Power Off
The server has a unit emergency power off (UEPO) switch on the front of the first frame (A Frame). Refer
to the following illustration, which shows a simplified UEPO panel.
J00
J01
J02
UEPO Switch
To A side BPC
Computer Room
Bypass Interlock
To B side BPC
Service
Buttons
To Computer
Room EPO
When the switch is tripped, the utility power is confined to the system power compartment. All volatile data
will be lost.
It is possible to attach the computer room emergency power off (EPO) system to the system UEPO. When
this is done, tripping the computer room EPO disconnects all power from the line cords and the internal
battery backup unit, if it is provided. All volatile data will be lost in this case also.
If the room EPO is not connected to the UEPO, tripping the computer room EPO removes ac power from
the system. If the interlock bypass feature is used, the system remains powered for a short time based on
system configuration.
102 Site and Hardware Planning Information
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