Locations — model 55x and OpenPower 720

Use this information to help you map a location code to a position on the server for the 9133-55A, 9406-550, 9113-550, and OpenPower® 720 models.

Note: The known logical location codes for this unit are listed next to the corresponding physical location in the following information. If you are working with a logical location code for this unit and it is not listed in the following information, contact your next level of support.

The following diagrams show field replaceable unit (FRU) layout in the system. Use these diagrams with the following tables.

If you need address information, refer to Addresses – model 55x and OpenPower 720.

Figure 1. Front view of the system

Figure 2. Back view of the system with 2 RIO/HSL ports on the planar and 1 bus card slot. Bus card is installed, port 1 is C6-T1 (closest to board) and port 0 is C6-T2 (towards the top of the card).

Figure 3. Back view of the stand-alone system with 2 RIO/HSL ports on the planar and 1 bus card slot. Bus card is installed, port 1 is C6-T1 (closest to board) and port 0 is C6-T2 (towards the top of the card).

Figure 4. Back view of the system with no RIO/HSL ports on the planar, but has 2 bus card slots (C6 and C14). When bus card is installed port 1 is Cx-T1 (closest to board) and port 0 is Cx-T2 (towards the top of the card).

Figure 5. Back view of the stand-alone system with no RIO/HSL ports on the planar, but has 2 bus card slots (C6 and C14). When bus card is installed port 1 is Cx-T1 (closest to board) and port 0 is Cx-T2 (towards the top of the card).

Figure 6. Top view of the system (including service processor reset switch)

Figure 7. Memory module locations on the processor card

The following table provides location codes for parts that make up the server.

Attention: After replacing any part on a server or expansion unit, perform Verifying the repair.

Table 1. FRU locations and failing components
Failing item name	Symbolic failing item name	Physical location code	Identify LED	Link to part number	Failing item removal and replacement procedures
System unit		Un
Fans
PCI adapters fan 1		Un-A1	Yes	Part assembly diagrams	Fans
PCI adapters fan 2		Un-A2	Yes	Part assembly diagrams	Fans
Processor fan 1		Un-A3	Yes	Part assembly diagrams	Fans
Processor fan 2		Un-A4	Yes	Part assembly diagrams	Fans
Power supplies
Power supply 1	PWRSPLY	Un-E1	Yes	51BA	Power supply
Power supply 2	PWRSPLY	Un-E2	Yes	51BA	Power supply
Backplanes
System backplane SPCN Card enclosure or backplane Multi- adapter bridge (all) Service processor RIO Hub/HSL NIC RIO/HSL I/O Bridge RIO/HSL link Ethernet controller USB controller (AIX® or Linux® only) IDE bridge (AIX or Linux only) SCSI controller Logic oscillator InfiniBand host channel adapter	HCA HSL_LNK MA_BRDG MABRCFG MASBUS NODEPL PIOCARD PPCITWR PRI_PCI SI_PHB SVCPROC SIIOADP SYSBKPL STORIOA TWRBKPL TWRCARD	Un-P1	Yes	28EC	System backplane
SCSI controller 0		Un-P1-T14
SCSI controller 1		Un-P1-T15
IDE controller		Un-P1-T16
Time-of-day battery		Un-P1-E1		Power parts	Service processor time-of-day battery
Disk drive (1 - 4) backplane		Un-P2 (logical location Un-P1-T14-L15-L0)	Yes	28F6 28F7 292C 292E	Disk drive backplane
Disk drive (5 - 8) backplane		Un-P3 (logical location Un-P1-T15-L15-L0)	Yes	28F6 28F7 292C 292E	Disk drive backplane
Passthru card		Connects to internal SCSI busses
Media drive backplane		Un-P4	Yes	28D1 291E	Media device enclosure
System backplane ports
system port 1		Un-P1-T1
S1 system port (front of control panel)		Un-P1-T1
system port 2		Un-P1-T2
SPCN 0 (upper connector)		Un-P1-T3
SPCN 1 (lower connector)		Un-P1-T4
HMC 1 (upper connector)		Un-P1-T5
HMC 2 (lower connector)		Un-P1-T6
USB port 0 (upper connector)		Un-P1-T7
USB port 1 (lower connector)		Un-P1-T8
Ethernet port A (0)		Un-P1-T9
Ethernet port B (1)		Un-P1-T10
RIO/HSL Port 0, left		Un-P1-T11, not available on 9133-55A
RIO/HSL Port 1, right		Un-P1-T12, not available on 9133-55A
Rack indicator		Un-P1-T13
Processor and processor regulator
Processor card 1		Un-P1-C9	Yes	26F0 26F1 5237 8312
Processor card 2		Un-P1-C8	Yes	26F0 26F1 5237 8312
Voltage regulator 1.5 V on Processor card 2		Un-P1-C8-C9	Yes	Power parts	Voltage regulator modules
Voltage regulator 2.5 V/1.8 V on Processor card 2		Un-P1-C8-C10	Yes	Power parts	Voltage regulator modules
Voltage regulator 1.5 V on Processor card 1		Un-P1-C9-C9	Yes	Power parts	Voltage regulator modules
Voltage regulator 2.5 V/1.8 V on Processor card 1		Un-P1-C9-C10	Yes	Power parts	Voltage regulator modules
Voltage regulator 1.2 V for Processor card 2		Un-P1-C11	Yes	Power parts	Voltage regulator modules
Voltage regulator 1.2 V for Processor card 1		Un-P1-C12	Yes	Power parts	Voltage regulator modules
VPD card		Un-P1-C13		System parts	VPD card
Adapters
PCI adapter in slot 1	PIOCARD MASBUS SLOTERR	Un-P1-C1	Yes	System parts	PCI adapter
PCI adapter in slot 2	PIOCARD MASBUS SLOTERR	Un-P1-C2	Yes	System parts	PCI adapter
PCI adapter in slot 3	PIOCARD MASBUS SLOTERR	Un-P1-C3	Yes	System parts	PCI adapter
PCI adapter in slot 4	PIOCARD MASBUS SLOTERR	Un-P1-C4	Yes	System parts	PCI adapter
PCI adapter in slot 5	PIOCARD MASBUS SLOTERR	Un-P1-C5	Yes	System parts	PCI adapter
GX adapter card	SIIOADP SIADPCD	Un-P1-C6	Yes	1806 1807	RIO/HSL adapter card
GX adapter card port 1 (bottom)		Un-P1-C6-T1	Yes		RIO/HSL cables concurrent
GX adapter card port 0 (top)		Un-P1-C6-T2	Yes		RIO/HSL cables concurrent
GX adapter card	SIIOADP SIADPCD	Un-P1-C14	Yes	1806 1807	RIO/HSL adapter card
GX adapter card port 1 (bottom)		Un-P1-C14-T1	Yes		RIO/HSL cables concurrent
GX adapter card port 0 (top)		Un-P1-C14-T2	Yes		RIO/HSL cables concurrent
RAID enablement card		Un-P1-C7	Yes	5709	RAID enablement card
PCI bridge set 1	BRDGSET BRDGST1	Un-P1 Un-P1-C1 Un-P1-C2			Replace the system backplane and cards using the removal and replacement procedures corresponding to the locations indicated.
PCI bridge set 2	BRDGSET BRDGST2	Un-P1 Un-P1-C4 Un-P1-C5			Replace the system backplane and cards using the removal and replacement procedures corresponding to the locations indicated.
PCI bridge set 3	BRDGSET BRDGST3	Un-P1 Un-P1-C3
Memory modules
Memory module 1	MEMDIMM	Un-P1-C8-C1	Yes	Memory parts	Memory modules
Memory module 2	MEMDIMM	Un-P1-C8-C2	Yes	Memory parts	Memory modules
Memory module 3	MEMDIMM	Un-P1-C8-C3	Yes	Memory parts	Memory modules
Memory module 4	MEMDIMM	Un-P1-C8-C4	Yes	Memory parts	Memory modules
Memory module 5	MEMDIMM	Un-P1-C8-C5	Yes	Memory parts	Memory modules
Memory module 6	MEMDIMM	Un-P1-C8-C6	Yes	Memory parts	Memory modules
Memory module 7	MEMDIMM	Un-P1-C8-C7	Yes	Memory parts	Memory modules
Memory module 8	MEMDIMM	Un-P1-C8-C8	Yes	Memory parts	Memory modules
Memory module 1	MEMDIMM	Un-P1-C9-C1	Yes	Memory parts	Memory modules
Memory module 2	MEMDIMM	Un-P1-C9-C2	Yes	Memory parts	Memory modules
Memory module 3	MEMDIMM	Un-P1-C9-C3	Yes	Memory parts	Memory modules
Memory module 4	MEMDIMM	Un-P1-C9-C4	Yes	Memory parts	Memory modules
Memory module 5	MEMDIMM	Un-P1-C9-C5	Yes	Memory parts	Memory modules
Memory module 6	MEMDIMM	Un-P1-C9-C6	Yes	Memory parts	Memory modules
Memory module 7	MEMDIMM	Un-P1-C9-C7	Yes	Memory parts	Memory modules
Memory module 8	MEMDIMM	Un-P1-C9-C8	Yes	Memory parts	Memory modules
Device physical locations
Disk drive 1		Un-P2-D1 (logical location Un-P1-T14-L8-L0 or Un-P1-Cn-Tn-L8-L0¹ )	Yes	Disk unit parts	Disk drive
Disk drive 2		Un-P2-D2 (logical location Un-P1-T14-L5-L0 or Un-P1-Cn-Tn-L5-L0¹)	Yes	Disk unit parts	Disk drive
Disk drive 3		Un-P2-D3 (logical location Un-P1-T14-L4-L0 or Un-P1-Cn-Tn-L4-L0¹)	Yes	Disk unit parts	Disk drive
Disk drive 4		Un-P2-D4 (logical location Un-P1-T14-L3-L0 or Un-P1-Cn-Tn-L3-L0¹)	Yes	Disk unit parts	Disk drive
Disk drive 5		Un-P3-D1 (logical location Un-P1-T15-L8-L0)	Yes	Disk unit parts	Disk drive
Disk drive 6		Un-P3-D2 (logical location Un-P1-T15-L5-L0)	Yes	Disk unit parts	Disk drive
Disk drive 7		Un-P3-D3 (logical location Un-P1-T15-L4-L0)	Yes	Disk unit parts	Disk drive
Disk drive 8		Un-P3-D4 (logical location Un-P1-T15-L3-L0)	Yes	Disk unit parts	Disk drive
SCSI device		Un-P4-D1 (logical location Un-P1-T14-L0-L0 with RPA partition and Un-P1-T14-L7-L0 with System i® partition)		Removable media device parts	Media device
IDE device 1		Un-P4-D2 (logical location Un-P1-T14-L1-L0 with RPA partition and Un-P1-T14-L6-L0 with System i partition)		Removable media device parts	Media device
IDE device 2		Un-P4-D3		Removable media device parts	Media device
¹ A logical location code with the form of Un-P1-Cn-Tn-Ln-Ln indicates that the disk is attached to a disk controller on a PCI adapter. Cn identifies the card slot of the PCI adapter. Tn identifies the port on the PCI adapter.
Control panel
Control panel		Un-D1		28E5, 250C	Control panel and signal cable
Temperature sensor		Un-D1		28E5seem	Control panel and signal cable

Input/output adapter (IOA) assignment rules for i5/OS®

The following table provides information necessary to identify the input/output processor (IOP) to which IOAs are assigned. The left column indicates the bridge set in which IOA assignment is allowed. Use the right column to determine the IOP to which an IOA is assigned. The first position in the list must be an IOP. The remaining positions might be IOPs or IOAs. IOAs are assigned to the first IOP located to their left in the list. Although IOAs can be manually reassigned using system service tools (SST)/dedicated service tools (DST), the IOA assignments return to the default order after each initial program load (IPL).

Table 2. Model 550 adapter placement
Multi-adapter bridge domain / Peripheral Component Interconnect (PCI) bridge set	IOA assignment rules
PHB0
C1, C2	C1, Embedded Ethernet, embedded SCSI, C2
PHB2
C3, C4, C5	C3, C4, C5