HP MSA Controllers - Manual (Page 62)

62 Troubleshooting
Can you view a replication image?
Can you view remote systems?
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.
Answer Possible reasons Actions
Yes System functioning properly. No action required.
No Nonexistent replication image. • In SMU’s Configuration View panel, expand vdisks and
subordinate volumes to reveal the existence of a
replication image or images.
• If a replication image has not been successfully created,
use SMU to create one as described in the “Using Remote
Snap to replicate volumes” topic within the SMU guide.
No Communication link is down. See actions described in Can you view information about
remote links? on page 60.
Answer Possible reasons Actions
Yes System functioning properly. No action required.
No Non-existent replication set. See actions described in Can you replicate a volume? on
page 61.
No Communication link is down. See actions described in Can you view information about
remote links? on page 60.