subscribe iconSubscribe to this information
POWER7 information

SAS fabric identification

Use this information to determine the FRUs to replace when there is a SAS fabric connection problem.

Determine if the connection problem is with a single device or multiple devices. For AIX® or Linux operating systems, see Viewing SAS fabric path information to view the status of SAS fabric paths. For the IBM® i operating system, see Viewing SAS fabric path information to view the status of SAS fabric paths. Then use the appropriate table to determine the service action to perform.

Table 1. Service actions for SAS fabric connection problems on the 8202-E4B, 8202-E4C, 8202-E4D, 8205-E6B, 8205-E6C, 8205-E6D, 8231-E2B, 8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, 8268-E1D
Location of device or devices Connection problem with a tape device Connection problem with a single device other than a tape device Connection problem with multiple devices
8202-E4B or 8205-E6B Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8202-E4B or 8205-E6B locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Tape device at location Un-P1-D1 or Un-P1-D2.
  2. System backplane (CCIN 2BFB or 2BFC) at location Un-P1.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8202-E4B or 8205-E6B locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device at location Un-P2-Dx.
  2. Device backplane (CCIN 2BD5 or 2BD6) at location Un-P2.
  3. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2BFB or 2BFC) at location Un-P1.
    • RAID adapter (CCIN 2B4C or 2B4F) at location Un-P1-C19.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8202-E4B or 8205-E6B locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device backplane (CCIN 2BD5 or 2BD6) at location Un-P2.
  2. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2BFB or 2BFC) at location Un-P1.
    • RAID adapter (CCIN 2B4C or 2B4F) at location Un-P1-C19.
Disk expansion unit attached to an 8202-E4B or 8205-E6B Not applicable Replace the device located in the disk expansion drawer. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace. Replace the cables to the disk expansion unit. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace.
8202-E4C, 8202-E4D, 8205-E6C, 8205-E6D Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8202-E4C, 8202-E4D, 8205-E6C, 8205-E6D locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Tape device at location Un-P1-D1 or Un-P1-D2.
  2. System backplane (CCIN 2B2C, 2B2D, 2B4A, or 2B4B) at location Un-P1.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8202-E4C, 8202-E4D, 8205-E6C, 8205-E6D locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device at location Un-P2-Dx.
  2. Device backplane (CCIN 2BD5 or 2BD6) at location Un-P2.
  3. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2B2C, 2B2D, 2B4A, or 2B4B) at location Un-P1.
    • RAID adapter (CCIN 2BD9 or 2BE0) at location Un-P1-C19.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8202-E4C, 8202-E4D, 8205-E6C, 8205-E6D locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device backplane (CCIN 2BD5 or 2BD6) at location Un-P2.
  2. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2B2C, 2B2D, 2B4A, or 2B4B) at location Un-P1.
    • RAID adapter (CCIN 2BD9 or 2BE0) at location Un-P1-C19.
Disk expansion unit attached to an 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D Not applicable Replace the device located in the disk expansion drawer. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace. Replace the cables to the disk expansion unit. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace.
8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, 8268-E1D Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, or 8268-E1D locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Tape device at location Un-P1-D1 or Un-P1-D2.
  2. System backplane (CCIN 2B2C, 2B2D, 2B4A, or 2B4B) at location Un-P1.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, or 8268-E1D locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device at location Un-P3-Dx.
  2. Device backplane (CCIN 2BD7 or 2BE7) at location Un-P3.
  3. Device backplane interposer (CCIN 2D1E or 2D1F) at location Un-P2.
  4. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2B2C, 2B2D, 2B4A, or 2B4B) at location Un-P1.
    • RAID adapter (CCIN 2B4C) at location Un-P1-C18.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, or 8268-E1D locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device backplane (CCIN 2BD7 or 2BE7) at location Un-P3.
  2. Device backplane interposer (CCIN 2D1E or 2D1F) at location Un-P2.
  3. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2B2C, 2B2D, 2B4A, or 2B4B) at location Un-P1.
    • RAID adapter (CCIN 2B4C) at location Un-P1-C18.
Disk expansion unit attached to an 8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, 8268-E1D Not applicable Replace the device located in the disk expansion drawer. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace. Replace the cables to the disk expansion unit. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace.
8231-E2B Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8231-E2B locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Tape device at location Un-P1-D1 or Un-P1-D2.
  2. System backplane (CCIN 2BFB or 2BFC) at location Un-P1.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8231-E2B locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device at location Un-P3-Dx.
  2. Device backplane (CCIN 2BD7 or 2BE7) at location Un-P3.
  3. Device backplane interposer (CCIN 2D1E or 2D1F) at location Un-P2.
  4. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2BFB or 2BFC) at location Un-P1.
    • RAID adapter (CCIN 2BD9 or 2BE0) at location Un-P1-C18.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See 8231-E2B locations to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device backplane (CCIN 2BD7 or 2BE7) at location Un-P3.
  2. Device backplane interposer (CCIN 2D1E or 2D1F) at location Un-P2.
  3. Replace the adapter that logged the error. The adapter might be any of the following possible failing items:
    • System backplane (CCIN 2BFB or 2BFC) at location Un-P1.
    • RAID adapter (CCIN 2BD9 or 2BE0) at location Un-P1-C18.
Disk expansion unit attached to an 8231-E2B Not applicable Replace the device located in the disk expansion drawer. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace. Replace the cables to the disk expansion unit. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace.
Table 2. Service actions for SAS fabric connection problems on the 8248-L4T, 8408-E8D, 8412-EAD, 9109-RMD, 9117-MMB, 9117-MMC, 9117-MMD, 9179-MHB, 9179-MHC, or 9179-MHD
Location of device or devices Connection problem with a DVD Connection problem with a single device other than a DVD Connection problem with multiple devices
8248-L4T, 8408-E8D, 8412-EAD, 9109-RMD, 9117-MMB, 9117-MMC, 9117-MMD, 9179-MHB, 9179-MHC, or 9179-MHD Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See Part locations and location codes to determine the location, part number, and replacement procedure to use for each FRU.
  1. DVD at location Un-P2-C9-D7.
  2. I/O backplane at location Un-P2.
  3. Small form factor SAS disk drive backplane with embedded SAS adapters at location Un-P2-C9.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See Part locations and location codes to determine the location, part number, and replacement procedure to use for each FRU.
  1. Device at location Un-P2-C9-Dx.
  2. Small form factor SAS disk drive backplane with embedded SAS adapters at location Un-P2-C9.
  3. I/O backplane at location Un-P2.
 Replace the following FRUs, one at a time, in the order shown until the problem is resolved. See Part locations and location codes to determine the location, part number, and replacement procedure to use for each FRU.
  1. Small form factor SAS disk drive backplane with embedded SAS adapters at location Un-P2-C9.
  2. I/O backplane at location Un-P2.
Disk expansion unit attached to an 8248-L4T, 8408-E8D, 8412-EAD, 9109-RMD, 9117-MMB, 9117-MMC, 9117-MMD, 9179-MHB, 9179-MHC, or 9179-MHD Not applicable Replace the device located in the disk expansion drawer. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace. Replace the cables to the disk expansion unit. If that does not resolve the problem, see the service information for the disk expansion unit for additional FRUs to replace.
Parent topic: Isolating problems on servers that run AIX or Linux

Send feedback Rate this page

Last updated: Thu, July 23, 2015