Appendix A: Uninterruptible Power Supply
UPS Status Monitoring
A-5
A.6.3 UPS Message Summary
Table A-1
below summarizes the UPS messages described above. It is
important that you become familiar with these messages and their meanings
to help maintain the integrity of the data running through your subsystem.
Message
AC Power
Battery
Power
Level (BPL)
Write
Policy
Status
UPS connection is absent
N/A
N/A
Write
back
UPS connection detected
N/A N/A Write
back
Warning: UPS AC Power-
Loss detected
Disconnected
BPL > 50%
Write through
Warning: UPS Battery
Low 50%. Please shut
down to protect data loss
Disconnected
BPL < 50%
Write through
Warning: UPS Battery
Low 50%.
Connected
BPL < 50%
Write through
UPS AC Power Restored
Reconnected
BPL > 50%
Write back
UPS AC Power Restored
Reconnected
BPL < 50%
Write through
UPS Battery restored to
safe level
Reconnected
BPL > 50%
Write back
Table A-1: UPS Status Messages
