ADIC Scalar 1000, SNC 5100 manual Check for Multiple Scsi IDs, Type

SNC 5100

Check for Multiple SCSI IDs

If two or more devices on the same SCSI channel are configured at the same SCSI ID, only one of those devices will be seen by the SNC 5100. Data transfers to that device will be unreliable.

Caution

If in this procedure you determine that you need to correct any SCSI IDs, all I/O to the SNC 5100 must be stopped and the SNC 5100 must be turned off.

Step 1. Enter the scsiShow command from the service terminal.

For more information, see the "scsiShow" command on page 160.

Step 2. Write down the SCSI IDs of all devices connected to each SCSI channel.

Step 3. Check that only one device is set to each ID for each SCSI channel.

Assign a new SCSI ID to any conflicting target device.

Step 4. Check that for each SCSI Channel, no devices are set to ID 7 except the SNC 5100 channel ID.

If a target device is set to the same ID as the SNC 5100 (ID 7), the bus will be unstable and data corruption may result.

Step 5. If you do not need to correct any SCSI IDs, go to "Improper Device Type".

Step 6. If you corrected any SCSI IDs, reboot the SNC 5100.

Step 7. After it finishes booting, enter the scsiShow command.

For more information, see the "scsiShow" command on page 160.

Step 8. Compare the list of attached devices with the physical devices.

If not all of the physical devices are shown, go to "Improper Device

Type".

If all of the physical devices are shown, go to "SCSI Health Check".

54 SCSI Channel MAP

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