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JBOD Enclosure Status Monitoring
A Unified Storage system, when connected with expansion JBODs, acquires the component
status within other enclosures via a proprietary enclosure monitoring service using the in-band
connectivity. No additional management connection is required.
I
2
C bus
The detection circuitry and temperature sensors are interfaced through a non-user-serviceable I
2
C
bus. When JBODs are attached to controllers, JBOD component status is reported through in-band
protocols over expansion links that is managed by a proprietary enclosure service.
Firmware (FW) and PAC Management Software
The firmware (FW) is preloaded and is used to configure the system. The FW can be
accessed through the PAC Management Software, a browser-based graphical user interface
(GUI) software that can be installed on a local/remote computer and accessed via the
network. The manager communicates with the array via the connection of the existing host
links or the Ethernet link to the array
’s Ethernet port.
Audible Alarms
The system comes with audible alarms that are triggered when certain active components
fail or when certain controller or system thresholds are exceeded. Whenever you hear an
audible alarm, it is imperative that you determine the cause and rectify the problem
immediately.
Event notification messages indicate the completion or status of array configuration tasks
and are always accompanied by two or three successive and prolonged beeps. The alarm
can be turned off using the mute button on the front panel.
WARNING
Failing to respond when an audible alarm is heard can lead to permanent damage(s)
to the system. When an audible alarm is heard, rectify the problem as soon as
possible
System Monitoring
The system comes with a number of hot-swappable components that can be exchanged
while the system is still online without affecting the operational integrity. These components
should only be removed from the system when they have to be replaced.
The following components can be user-maintained and hot-swappable:
•
Controller module (Dual Controller models)
•
PSU (including cooling modules)
•
Hard Drive
NOTE
Normalized airflow ensures sufficient cooling of the system and is only attained when
all components are properly installed. Therefore, a failed component should only be
removed when a replacement is available. For instructions on how to replace these
hot-swappable components, please refer to System Maintenance.