MAP 3142

Use this MAP to resolve the following problem:

Configuration error: incorrect connection between cascaded enclosures (SRN nnnn-4010) for a PCIe controller.

The possible causes follow:
  • Incorrect cabling of cascaded device enclosures.
  • Use of an unsupported device enclosure.
Considerations:
  • Remove power from the system before connecting and disconnecting cables or devices, as appropriate to prevent hardware damage or erroneous diagnostic results.

Step 3142-1

Identify the adapter SAS port that is associated with the problem by examining the hardware error log. View the hardware error log as follows:
  1. Follow the steps in Examining the hardware error log and return here.
  2. Obtain the Resource field from the Detail Data / PROBLEM DATA section as illustrated in the following example: 
    Detail Data
PROBLEM DATA 
0000 0800 0004 FFFF 0000 0000 0000 0000 0000 0000 1910 00F0 0408 0100 0101 0000
          ^
          |
      Resource is 0004FFFF

Using the resource specified in step 2, see SAS resource locations to understand how to identify the controller port to which the device, or device enclosure, is attached.

For example, if the resource is 0004FFFF, port 04 on the adapter is used to attach the device or device enclosure, that is experiencing the problem.

Step 3142-2

Review the device enclosure cabling and correct the cabling as required. To see example device configurations with SAS cabling, see Planning for serial-attached SCSI cables.

If unsupported device enclosures are attached, then either remove or replace them with supported device enclosures.

Step 3142-3

Run diagnostics in system verification mode on the adapter to rediscover the devices and connections.
  1. Start Diagnostics and select Task Selection on the Function Selection display.
  2. Select Run Diagnostics.
  3. Select the adapter resource.
  4. Select System Verification.
Referring to the steps in Examining the hardware error log, did the error reoccur?
No
Go to Step 3142-4.
Yes
Contact your hardware service provider.

Step 3142-4

When the problem is resolved, see the removal and replacement procedures topic for the system unit on which you’re working and complete the Verifying a repair procedure.