DEC DS-HSZ22-AA, User Manual

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RAID Array 3000 Pedestal Enclosure
2–22 EK–SMCPO–UG. A01
WARNING
•
Slow Alarm
•
Normal I/O
SEVERE
•
UltraSCSI Alarm
•
Flushes Cache
•
Enters Write-Through Mode
OFFLINE
•
UltraSCSI Alarm
•
Flushes Cache
•
No New I/O Allowed
2.9.2 Voltage Monitoring
2.9.2.1 System Voltage
The controller monitors the incoming system voltage levels and ensures they are
satisfactory for controller operation. The acceptable voltage levels are listed in
Table 2–8.
Table 2–8 Acceptable System Voltage Levels
State Range Action
Normal 4.80 - 5.25 V Normal Operation
Low Warning 4.75 - 4.80 V Alarm
High Warning 5.25 - 5.30 V Alarm
Low Severe Less than 4.75 V Off-line
High Severe Greater than 5.30 V Off-line