Sensor Locations; Power Supply Sensors; Cooling Fan Sensors; Temperature Sensors - HP 2000i User Manual

Sensor locations

The storage system monitors conditions at different points within each enclosure to alert you to problems.
Power, cooling fan, temperature, and voltage sensors are located at key points in the enclosure. In each
controller module and expansion module, the enclosure management processor (EMP) monitors the status
of these sensors to perform SCSI enclosure services (SES) functions.
The following sections describe each element and its sensors.

Power supply sensors

Each enclosure has two fully redundant power supplies with load-sharing capabilities. The power supply
sensors described in the following table monitor the voltage, current, temperature, and fans in each power
supply. If the power supply sensors report a voltage that is under or over the threshold, check the input
voltage.
Table 7

Power supply sensors

Description
Power supply 1
Power supply 2

Cooling fan sensors

Each power supply includes two fans. The normal range for fan speed is 4000 to 6000 RPM. When a
fan's speed drops below 4000 RPM, the EMP considers it a failure and posts an alarm in the storage
system's event log. The following table lists the description, location, and alarm condition for each fan. If
the fan speed remains under the 4000 RPM threshold, the internal enclosure temperature may continue to
rise. Replace the power supply reporting the fault.
Table 8

Cooling fan sensor descriptions

Description
Fan 1
Fan 2
Fan 3
Fan 4
During a shutdown, the cooling fans do not shut off. This allows the enclosure to continue cooling.

Temperature sensors

Extreme high and low temperatures can cause significant damage if they go unnoticed. Each controller
module has six temperature sensors. Of these, if the CPU or FPGA temperature reaches a shutdown value,
the controller module is automatically shut down. Each power supply has one temperature sensor.
When a temperature fault is reported, it must be remedied as quickly as possible to avoid system damage.
This can be done by warming or cooling the installation location.
Table 9

Controller module temperature sensors

Description
CPU temperature
FPGA temperature
Onboard temperature 1
Event/Fault ID LED condition
Voltage, current, temperature, or fan fault
Voltage, current, temperature, or fan fault
Location Event/Fault ID LED condition
Power supply 1 < 4000 RPM
Power supply 1
< 4000 RPM
Power supply 2
< 4000 RPM
Power supply 2
< 4000 RPM
Normal operating
range
3–88°C
3–97°C
0–70°C
HP StorageWorks 2000i G2 Modular Smart Array User Guide
Warning Critical operating
operating range range
0–3°C,
> 90°C
88–90°C
0–3°C, None
97–100°C
None None
Shutdown values
0°C
100°C
0°C
100°C
None
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