HP D3604-90004 manual If the Host Cannot Communicate With the Storage System

4 Troubleshooting

If the Host Cannot Communicate With the Storage System

If the SCSI devices spin up, but the host cannot access the SCSI devices, do the following on the storage system:

∙Verify all of the drive modules are inserted correctly and latched. (It may be necessary to remove and reinstall all hot-swap disk modules.)

∙Make sure the system is configured properly, including the devices installed in the SCSI device shelves. (Refer to the cable management label in the storage system and this manual.)

∙Verify the switches on the back of the hot-swap cages are set correctly. (Refer to Table 2-2 or the manufactured configuration label to see default settings.)

∙Verify the switches and jumpers on the SCSI device trays are properly set. (Refer to the manuals that came with the devices.)

∙Make sure that the active terminator is attached to the end of the SCSI device cable C1, and that terminators are not installed on any other devices. (The hot-swap cages are self-terminating.)

∙Verify the SCSI device address for each device is unique.

∙Make sure the SCSI devices are single-ended devices and that a differential SCSI device has not been added to the bus. (If a differential drive is used, the power indicator will not light.)

∙Make sure that no SCSI device is set to SCSI address 7; address 7 is the SCSI ID used by the SCSI controller.

If the SCSI devices spin up, but the host cannot access the SCSI devices, do the following on the host system:

∙Verify the host system operates correctly without the storage system attached.

∙Verify the external SCSI cables are firmly connected to the storage system.

∙Verify the external SCSI cable(s) used are those recommended by HP for the storage system.

∙Make sure all SCSI adapter cards are properly installed.

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