1 Reply Latest reply on Dec 8, 2015 3:14 PM by JFFulcrum

    Wellsburg SATA controller enumerates drives in AHCI mode differently, Why?

    STB_Raleigh

      Have 2 different Vendors servers. 6 drives on the SATA controller in Wellsburg,

      SATA set to AHCI.

      Why does system vendor A list the drives in RHEL 7 as 0:0:0:0, 0:0:1:0, 0:0:2:0

      00:1f.2 SATA controller [0106]: Intel Corporation Wellsburg 6-Port SATA Controller [AHCI mode] [8086:8d02] (rev 05)

      00:11.4 SATA controller [0106]: Intel Corporation Wellsburg SATA Controller [AHCI mode] [8086:8d62] (rev 05)

      00:16.0 Communication controller [0780]: Intel Corporation Wellsburg MEI Controller #1 [8086:8d3a] (rev 05)

      00:16.1 Communication controller [0780]: Intel Corporation Wellsburg MEI Controller #2 [8086:8d3b] (rev 05)

      00:1a.0 USB controller [0c03]: Intel Corporation Wellsburg USB Enhanced Host Controller #2 [8086:8d2d] (rev 05)

      00:1c.0 PCI bridge [0604]: Intel Corporation Wellsburg PCI Express Root Port #1 [8086:8d10] (rev d5)

      System Vendor B list the drives in RHEL 7 as 0:0:0:0, 1:0:0:0, 2:0:0:0.

      00:1f.2 SATA controller [0106]: Intel Corporation Wellsburg 6-Port SATA Controller [AHCI mode] [8086:8d02] (rev 05)

      00:14.0 USB controller [0c03]: Intel Corporation Wellsburg USB xHCI Host Controller [8086:8d31] (rev 05)

      00:16.0 Communication controller [0780]: Intel Corporation Wellsburg MEI Controller #1 [8086:8d3a] (rev 05)

      00:16.1 Communication controller [0780]: Intel Corporation Wellsburg MEI Controller #2 [8086:8d3b] (rev 05)

      00:1a.0 USB controller [0c03]: Intel Corporation Wellsburg USB Enhanced Host Controller #2 [8086:8d2d] (rev 05)

      00:1c.0 PCI bridge [0604]: Intel Corporation Wellsburg PCI Express Root Port #1 [8086:8d10] (rev d5)

      00:1c.4 PCI bridge [0604]: Intel Corporation Wellsburg PCI Express Root Port #5 [8086:8d18] (rev d5)

      00:1c.5 PCI bridge [0604]: Intel Corporation Wellsburg PCI Express Root Port #6 [8086:8d1a] (rev d5)

      00:1c.7 PCI bridge [0604]: Intel Corporation Wellsburg PCI Express Root Port #8 [8086:8d1e] (rev d5)

       

      In each case the slot is mapped correct

      slot 1 = A - 0,0,1,0 B- 1,0,0,0

      Slot 2 - A - 0,0,2,0  B - 2,0,0,0

       

      I would expect both servers to function the same and list the drives by ID, not host adapter ID (host adapter ID : SCSI channe l: ID: Lun) ?