Compaq AlphaServer 160 User Manual page 57

Power Supply Configuration Rules
•
Power subracks are always mounted in the same power cabinet location,
regardless of the number of system boxes.
•
Power supply slot assignments remain the same in all systems, regardless
of the number of system boxes.
•
A redundant power supply slot is always the last slot to be used in a
subrack.
GS160/320 System Configuration Rules
3-9