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RAID Subsystem DVA-08K | Installation Manual
Advanced Fault-Preventative Operation
The cooling fan modules support dual-speed operation modes that help to protect the sub-
system in the event of component failure or extreme working condition.
Intelligent Dual Speed Operation
The cooling fans operate with two rotation speeds. Under normal operating conditions, the
cooling fans run at the low speed, which is sufficient for maintaining efficient airflow across
components. Under the following conditions, cooling fans raise their rotation speed to
increase the airflow:
1.
2.
3.
NOTICE!
There are two values set for the upper temperature thresholds. One is set for event notifica-
i
tion and the other triggering higher fan rotation speed. The preset value for event notification
can be changed using the firmware-embedded configuration utility, while the fan speed trig-
ger is not a user's option.
2.4
Subsystem Monitoring
The SATA-based RAID subsystem comes with a number of different monitoring methods that
provide you with continual updates on the status of the system and individual components.
The following monitoring features are included in the subsystem.
2
2.4.1
I
C Bus
The following subsystem elements are interfaced to the RAID controller over a non-user-ser-
viceable I
•
•
•
2.4.2
LED Indicators
The following active components come with LEDs to indicate the status of the individual com-
ponents:
•
•
•
•
•
•
2.4.3
Firmware and Bosch RAIDWatch GUI
Firmware: The firmware is pre-installed software that is used to configure the subsystem. The
firmware can be accessed either through the LCD keypad panel or a terminal emulation pro-
gram running on a management computer that is connected to the subsystem's serial port.
Bosch RAIDWatch: Bosch RAIDWatch is a premier Web-based graphical user interface (GUI)
that can be installed on a remote computer and is used to access the array through LAN or the
Bosch Security Systems
Component Failure: if another cooling fan module, a PSU, or a temperature sensor fails,
the remaining cooling fan(s) automatically raises its rotation speed.
Elevated Temperature: if the temperature breaches the upper threshold set for any of the
interior temperature sensors, the cooling fans automatically raises its rotation speed.
During the subsystem initialization stage, the cooling fans operate at the high speed and
return to lower speed once the initialization process is completed and no erroneous con-
dition is detected.
2
C bus:
Cooling fan modules
PSUs
Temperature sensors
RAID controller
LCD panel
Cooling fan module
PSU module
BBU module
Drive trays
Introduction | en
15
F.01U.027.797 | V1 | 2006.05
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