HP Surestore Disk Array FC60 HP SureStore E Disk Array 12H User's and Service - Page 120

Troubleshooting Troubleshooting Troubleshooting Procedures Power Module General Troubleshooting Procedure Follow these steps for any power module failure, except if the disk array contains three power modules (see "Three Power Modules Troubleshooting Procedure" in this chapter): 1. Remove all disk modules. 2. Install the disk modules one at a time until a power module fault occurs. 3. Remove all disk modules except the last one installed. 4. If a power module fault occurs again, replace the disk module. 5. If a power module fault occurs after replacing the disk module, replace the power module. Three Power Modules Troubleshooting Procedure If the disk array contains three power modules and the status lights on all three power modules are amber, follow this procedure: 1. Cycle the disk array power. 2. After power-on, the power module status lights will be amber. If all fan module status lights do not turn green before the array turns off, replace the fan modules. If at least one fan status light turns green after power-on, either a power module has failed or an over-current condition exists. Follow the steps under "Power Module General Troubleshooting Procedure" in this chapter. Disk Module If a disk module failure occurs, check the following: 1. A solid amber status light at any time other than during a self-test indicates a disk module fault. A flashing or pulsing green status light indicates read/write activity. 2. Replace the disk module. Host SCSI Bus Check for SCSI bus problems as follows: 1. Check the SCSI cable connections and also look for bent pins. 2. Check the SCSI terminator connections. A single-ended terminator on a differential bus will cause the bus to hang. 3. Check SCSI IDs for conflicting ID numbers. 4. Check to see if the Host Bus Adapter includes on-board termination and termination power, or if these must be supplied externally. 120