Technical data

Overview
4-3
4
Environmental Monitoring
The SCSI Device Storage Module is equipped with an
environmental monitoring function. This functions monitors the
internal temperature of the module.
Two overtemperature levels are used by this function:
❏ When the first overtemperature level is reached, an
Overtemperature LED (located next to the SCSI connectors
on the back panel of the module) turns on. At that point,
Motorola-supported SCSI devices are approaching their
upper temperature limits, but are not in danger of immediate
damage. At this point, corrective action, such as lowering the
ambient temperature or removing blockages to the airflow,
can reverse the condition and allow normal operations to
continue. If the overtemperature condition is due to a failed
fan, the system should be shut down and the failed unit
replaced.
❏ When the second overtemperature level is reached, the SCSI
Device Storage Module is shut down. To recover from this,
the system should be shut down, corrective action taken
(decrease ambient temperature, remove any airflow
blockages, or replace failed units), and the system restarted.
After restarting the system, test the drive units in the storage
module to verify that they were not damaged by the
overtemperature condition.
An RJ-45 connector/cable links the module’s environmental
monitoring function with the system’s environmental monitoring
functions. If the system is equipped with an optional alarm board,
audible and remote environmental alarm reporting for both the
system and the SCSI Device Storage Module is possible.