HP MSA Controllers - Manual (Page 63)

HP P2000 G3 FC/iSCSI MSA System User Guide 63
Cooling fan sensors
Each power supply includes two fans. The normal range for fan speed is 4,000 to 6,000 RPM. When a
fan’s speed drops below 4,000 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 4,000 RPM threshold, the internal enclosure temperature may continue to
rise. Replace the power supply reporting the fault.
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 (Field Programmable Gate Array)
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 8 Power supply sensors
Description Event/Fault ID LED condition
Power supply 1 Voltage, current, temperature, or fan fault
Power supply 2 Voltage, current, temperature, or fan fault
Table 9 Cooling fan sensor descriptions
Description Location Event/Fault ID LED condition
Fan 1 Power supply 1 < 4,000 RPM
Fan 2 Power supply 1 < 4,000 RPM
Fan 3 Power supply 2 < 4,000 RPM
Fan 4 Power supply 2 < 4,000 RPM
Table 10 Controller module temperature sensors
Description Normal operating
range
Warning
operating range
Critical operating
range
Shutdown values
CPU temperature 3–88°C 0–3°C,
88–90°C
> 90°C 0°C
100°C
FPGA temperature 3–97°C 0–3°C,
97–100°C
None 0°C
105°C
Onboard temperature 1 0–70°C None None None
Onboard temperature 2 0–70°C None None None
Onboard temperature 3
(Capacitor temperature)
0–70°C None None None
CM temperature 5–50°C ≤ 5°C,
≥ 50°C
≤ 0°C,
≥ 55°C
None