HP P2000 Manuel d'utilisateur télécharger pdf (Page 54)

54 Troubleshooting

7. Replace the cable with a known good cable, ensuring the cable is attached to the original ports used

by the previous cable.

Is the host link status LED on?

• Yes – Replace the original cable. The fault has been isolated.

• No – It is likely that the controller module needs to be replaced.

Resolving voltage and temperature warnings

1. Check that all of the fans are working by making sure each power supply’s Voltage/Fan Fault/Service

Required LED is off or by using SMU to check for yellow yield icon hardware warnings. (In the

Configuration View panel, right-click the enclosure and select View > Overview.)

2. Make sure that all modules are fully seated in their slots and that their latches are locked.

3. Make sure that no slots are left open for more than two minutes.

If you need to replace a module, leave the old module in place until you have the replacement or use a

blank module to fill the slot. Leaving a slot open negatively affects the airflow and can cause the

enclosure to overheat.

4. Try replacing each power supply one at a time.

5. Replace the controller modules one at a time.

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.

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.

Table 7 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 8 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

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 75 76

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HP P2000 Manuel d'utilisateur Page 54

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