SIP3143

Use this procedure to resolve the following configuration error: connections exceed adapter design limits (SRC xxxx4020).

1. Identify the affected adapter and its port by examining the product activity log. Perform the following steps:
   1. Access SST or DST.
      • If you can enter a command at the console, access system service tools (SST). See System service tools.
      • If you cannot enter a command at the console, perform an IPL to DST. See Performing an IPL to dedicated service tools.
      • If you cannot perform a type A or B IPL, perform a type D IPL from removable media.
   2. Access the product activity log and record address information.

      If a type D IPL was not performed to get to SST or DST:

      The log information is formatted. Access the product activity log and display the SRC that sent you here. Press the F9 key for address information. This is the adapter address. Then, press F12 to cancel and return to the previous screen. Then press the F4 key to view the additional information to record the formatted log information. The Adapter Port field indicates the port on the adapter reporting the problem. There may be more than one port listed because multiple ports map to the same physical connector. For example, ports 0 through 3 map to the first physical connector, 4 through 7 map to the second physical connector, and so on. The port numbers are labeled on the adapter tailstock.

      If a type D IPL was performed to get to DST:

      The log information is not formatted. Access the product activity log and display the SRC that sent you here. The direct select address (DSA) of the adapter is in the format BBBB-xxxx:

      BBBB

      Hexadecimal offsets 4C and 4D

      xxxx

      Not used

      In order to interpret the hexadecimal information to get device addresses, see Examples: Obtaining additional information from hexadecimal reports. The Adapter Port field indicates the port on the adapter reporting the problem. There might be more than one port listed because multiple ports map to the same physical connector. For example, ports 0 through 3 map to the first physical connector, 4 through 7 map to the second physical connector, and so on. The port numbers are labeled on the adapter tailstock.

   3. Determine the location of the adapter that reported the problem.
      Go to Addresses and find the following items:

      • The card slot that is identified by the direct select address (DSA)
      • The physical connector identified by the port number found on the adapter tailstock

      Have you determined the location of the adapter and its port?

      • No: Ask your next level of support for assistance. This ends the procedure.
      • Yes: Continue with the next step.
2. Reduce the number of cascaded device enclosures. Device enclosures can only be cascaded one level deep, and only in certain configurations.
   Review the device enclosure cabling and correct the cabling as required for the device or device enclosure attached to the identified adapter port. To see example device configurations with SAS cabling, see Serial-attached SCSI cable planning, in the Site and hardware planning information.
3. Perform the following steps to cause the adapter to rediscover the devices and connections:
   Note: Performing this step causes the system partition to temporarily hang. Wait until the system bypasses the temporary hang.

   1. Use the logical resources I/O debug option in Hardware Service Manager to perform another IPL of the virtual I/O processor that is associated with this adapter.
   2. Vary on any other resources attached to the virtual I/O processor.

   Did the error recur?

   No:

   This ends the procedure.

   Yes:

   Contact your hardware service provider. This ends the procedure.