Appendix B Uninterruptible Power Supply
B.6.3 UPS Message Summary
Table B-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 B-1: UPS Status Messages
UPS Status Monitoring
B
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