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Figure 40. LED locations
RAID controller location code
The RAID controllers are embedded on the enclosure RAID module (ERM) card and connect to the
system by using a PCIe cable. All I/O controllers or adapters attached by a PCIe bus on Power Systems
servers inherit the location code of the I/O slot to which they connect.
Generally, the location code of an I/O slot is based on the enclosure in which the nearest upstream PCI
bridge resides. This is normally a PCI slot, but for a RAID controller in an ERM, it is where the PCIe
cable is connected on the GX adapter in the system unit. Therefore, the logical PCIe slot location code for
the RAID controller is associated with the PCIe cable connector location on the GX adapter in the system.
This logical location code (L1 in the following example) indicates that the associated RAID controller
resource connects to the connector.
The logical PCIe slot location of the RAID controller in an ERM is shown in the following form:
Utttt.mmm.sssssss-Pw-Cx-Ty-L1 (-T1), where:
v Utttt.mmm.sssssss is the type, model, and serial number of the system central electronics complex (CEC)
enclosure in which the GX adapter resides
v Pw is the planar in the system CEC enclosure that the GX adapter plugs into
v Cx is the slot on the planar that the GX adapter plugs into
v Ty is the PCIe connector on the GX adapter
v L1 is the logical RAID controller indicator
v T1 might be appended after L1 in some cases, but can be ignored
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Service information
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