Adapter placement rules and slot priorities for the EMX0 PCIe Gen3 I/O expansion drawer

Find information about the placement rules and slot priorities for the adapters that are supported for the EMX0 PCIe Gen3 I/O expansion drawer (EMX0 PCIe3 expansion drawer).

Slot descriptions for the EMX0 PCIe3 expansion drawer

The number of PCIe slots that are provided in the EMX0 PCIe3 expansion drawer depends on the I/O module configuration of the EMX0 PCIe3 expansion drawer. Your configuration might have one or two PCIe3 6-slot fanout modules installed in the rear of the EMX0 PCIe3 expansion drawer. Each PCIe3 6-slot fanout module provides six full-length, full-height, PCIe3 slots. The PCIe3 slots are compatible with PCIe1 and PCIe2 adapters. The PCIe slots use generation 3, single-wide, blind-swap cassettes.

The I/O module in the EMX0 PCIe3 expansion drawer is connected to the system with an expansion drawer cable pair. Each cable pair must be the same length and are attached to the T1 and T2 ports in the I/O module and to the corresponding ports in the PCIe3 cable adapter in the system.

Figure 1 shows the rear view of the EMX0 PCIe3 expansion drawer with the location codes for the adapter slots in the PCIe3 6-slot fanout module.

Table 1 lists the adapter slot locations and details for the EMX0 PCIe3 expansion drawer.
Figure 1. Rear view of a EMX0 PCIe3 expansion drawer with PCIe slot location codes
Note:
  • The left I/O module bay is configured with the first PCIe3 6-slot fanout module slot location codes P1-C1 through P1-C6.
  • The right I/O module bay is configured with the second PCIe3 6-slot fanout module slot location codes P2-C1 through P2-C6.
Rear view of a EMX0 PCIe3 expansion drawer with PCIe slot location codes.
Table 1. Slot locations and descriptions for the EMX0 PCIe3 expansion drawer
Location code Description Slot capabilities
SR-IOV Dynamic direct memory access (DMA) window I/O adapter enlarged capacity enablement order
P1-C1 PCIe3 x16 Yes Yes Yes1
P1-C2 PCIe3 x8 Yes Yes No
P1-C3 PCIe3 x8 Yes Yes No
P1-C4 PCIe3 x16 Yes Yes No
P1-C5 PCIe3 x8 Yes Yes No
P1-C6 PCIe3 x8 Yes Yes No
P2-C1 PCIe3 x16 Yes Yes Yes1
P2-C2 PCIe3 x8 Yes Yes No
P2-C3 PCIe3 x8 Yes Yes No
P2-C4 PCIe3 x16 Yes Yes No
P2-C5 PCIe3 x8 Yes Yes No
P2-C6 PCIe3 x8 Yes Yes No

1Slots P1-C1 and P2-C1 inherit the I/O Adapter Enlarged Capacity attribute from the slot in the system that connects to the EMX0 PCIe3 expansion drawer.

Notes:
  • All slots are PCIe3 slots.
  • All slots support full-length, full-height adapters or short form-factor with a full-height tailstock in single-wide, generation 3, blind-swap cassettes.
  • Slots C1 and C4 in each PCIe3 6-slot fanout module are PCIe3 x16 buses and slots C2, C3, C5, and C6 are PCIe x8 buses.
  • All slots support enhanced error handling (EEH).
  • All PCIe slots are hot swappable and can be serviced with the power on.
  • All six adapters in a PCIe3 6-slot fanout module can be in SR-IOV shared mode.
  • If you have a CCIN 50CB PCIe3 6-slot fanout module, the FC EC2S and FC EC2U adapters are only supported in slots C2 and C5. If you have a CCIN 50CD PCIe3 6-slot fanout module, the FC EC2S and FC EC2U adapters are supported in slots C1 through C6, but only four FC EC2S and FC EC2U adapters can be in SR-IOV mode at a time.

Firmware slot capabilities

System PCIe slots are allocated direct memory access (DMA) space using the following algorithm:
  • All slots are allocated a 2 GB default DMA window.
  • Slots P1-C1 and P2-C1 inherit the I/O Adapter Enlarged Capacity attribute from the slot in the system that connects to the EMX0 PCIe3 expansion drawer.
  • All other I/O adapter slots are allocated Dynamic DMA Window (DDW) capability based on installed platform memory. DDW capability is calculated assuming 4K I/O mappings:
    • For systems with less than 64 GB of memory, slots are allocated no DDW capability.
    • For systems with at least 64 GB of memory, but less than 128 GB of memory, slots are allocated 16 GB of DDW capability.
    • For systems with at least 128 GB of memory, but less than 256GB of memory, slots are allocated 32 GB of DDW capability.
    • For systems with 256 GB or more of memory, slots are allocated 64 GB of DDW capability.

Adapters placement rules

Use this information while selecting slots for installing adapters in the EMX0 PCIe3 expansion drawer attached to the system. Use Table 2 to identify slot placement priorities and the maximum number of adapters that can be installed in the EMX0 PCIe3 expansion drawer based on the operating system.
Note: You can click the link that appears in the feature code column for more technical information specific to the adapter.
  • If the EMX0 PCIe3 expansion drawer is configured with two PCIe3 6-slot fanout modules, distribute the adapters across both I/O modules whenever possible.
  • If FC EC46 is driving the internal DVD, it must be installed in the I/O expansion drawer that is closest to the system. The system and IO expansion drawer must be in the same rack.
    Note: If slot P1-C2 of the first node contains a controller adapter (CC), it must be the first option to consider for wiring the module with the USB adapter driving the internal DVD. If it is a PCIe3 6-slot fanout module, install FC EC46 in slot Px-C3 of the PCIe3 6-slot fanout module.
  • Do not attempt to install x16 adapters in x8 slots. Doing so can damage the x16 connectors in the EMX0 PCIe3 expansion drawer.
Table 2. Adapter slot priorities and maximum adapters supported in the EMX0 PCIe3 expansion drawer
Feature code Description EMX0 PCIe3 expansion drawer
Slot priorities1 Maximum number of adapters supported2
AIX® Linux® IBM® i
2893 or 2894 PCIe 2-line WAN with modem (FC 2893, 2894, EN13, EN14; CCIN 576C); Part number: 44V5323 P1-C6, P2-C6 0 1 1
5729 PCIe2 FH 4-port 8 Gb Fibre Channel adapter (FC 5729; CCIN 5729); Adapter part number: 74Y3467 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 0
5735 8 Gb PCI Express dual-port Fibre Channel adapter (FC 5273, 5735, EL2N, and EL58); CCIN 577D); Adapter part number: 10N9824 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL58 - 0) 6 6 (EL58 - 0)
5785 4-port Async EIA-232 PCIe 1X adapter (FC 5277 and 5785; CCIN 57D2); Adapter part number: 46K6734 P1-C6, P2-C6 1 1 1
5899 PCIe2 4-port 1 GbE adapter (FC 5260, 5899, EL4L, and EL4M; CCIN 576F); Adapter part number: 74Y4064 P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EC2N PCIe3 2-port 10 GbE NIC & RoCE SR adapter (FC EC2M, EC2N, and EL54; CCIN 57BE); Adapter part number: full-height tailstock: 00RX875, low-profile tailstock: 00RX872 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL54 - 0) 6 0
EC2S PCIe3 2-port 10 Gb NIC & RoCE SR/Cu adapter (FC EC2R and EC2S; CCIN 58FA); Adapter part number: 01FT759 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 2 or 63 2 or 63 2 or 63
EC2U PCIe3 2-port 25/10 Gb NIC & RoCE SFP28 adapter (FC EC2T and EC2U; CCIN 58FB); Adapter part number: 01FT756 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 2 or 63 2 or 63 2 or 63
EC38 PCIe3 LP 2-port 10 GbE NIC & RoCE SFP+ Copper adapter (FC EC37, EC38, EL3X, and EL53; CCIN 57BC); Adapter part number: 00RX859 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL53 - 0) 6 0
EC3B PCIe3 2-Port 40 GbE NIC RoCE QSFP+ Adapter P1-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C5, P2-C5 4 4 0
EC46 PCIe2 4-Port USB 3.0 Adapter P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EC6K PCIe2 LP 2-Port USB 3.0 Adapter P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EJ0J PCIe3 SAS RAID quad-port 6 Gb adapter (FC EJ0J and EL59); CCIN 57B4); Adapter part number: 00FX846 P1-C1, P2-C1, P1-C4, P2-C4, P1-C3, P2-C3, P1-C6, P2-C6 4 4 4
EJ0L PCIe3 12 GB Cache RAID SAS quad-port 6 Gb adapter (FC EJ0L; CCIN 57CE); Adapter part number: 00FX840 P1-C1, P2-C1, P1-C4, P2-C4, P1-C3, P2-C3, P1-C6, P2-C6 4 4 4
EJ10 PCIe3 4 x8 SAS Port adapter (FC EL60, EL65, EJ10, and EJ11; CCIN 57B4); Adapter part number: 00MH959 P1-C1, P2-C1, P1-C4, P2-C4, P1-C3, P2-C3, P1-C6, P2-C6 4 4 4
EJ14 PCIe3 12 GB Cache RAID PLUS SAS adapter quad-port 6 Gb x8 (FC EJ14; CCIN 57B1); Adapter part number 01DH742 P1-C1, P2-C1, P1-C4, P2-C4, P1-C3, P2-C3, P1-C6, P2-C6 4 4 4
EJ1N and EJ1P PCIe1 SAS Tape/DVD dual-port 3 Gb x8 adapter (FC EJ1N and EJ1P; CCIN 57B3); Adapter part number: 44V4852 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6 P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EJ28 PCIe Crypto- graphic Coprocessor (FC EJ27 and EJ28; CCIN 476A); Adapter part number: 45D7948 P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 0 6
EJ33 4767-001 Crypto- graphic Coprocessor (FC EJ32 and EJ33; CCIN 4767); Adapter part number: 00LV501 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6 P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EJ37 4769-001 Cryptographic Coprocessor (FC EJ35 and EJ37 for BSC; CCIN C0AF); Adapter part number: 02JD572 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6 P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 0 6
EL4L PCIe2 4-port 1 GbE adapter (FC 5260, 5899, EL4L, and EL4M; CCIN 576F); Adapter part number: 74Y4064 P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 0 6 0
EL54 PCIe3 2-port 10 GbE NIC & RoCE SR adapter (FC EC2M, EC2N, and EL54; CCIN 57BE); Adapter part number: full-height tailstock: 00RX875, low-profile tailstock: 00RX872 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 0 6 0
EL59 PCIe3 SAS RAID quad-port 6 Gb adapter (FC EJ0J and EL59; CCIN 57B4); Adapter part number: 000E9284 P1-C1, P2-C1, P1-C4, P2-C4, P1-C3, P2-C3, P1-C6, P2-C6 0 4 0
EL5B PCIe3 16 Gb 2-port Fibre Channel adapter (FC EL5B and EN0A; CCIN 577F); Adapter part number: 00E3496 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL5B - 0) 6 6 (EL5B - 0)
EN0A PCIe3 16 Gb 2-port Fibre Channel adapter (FC EL43, EL5B, EN0A, and EN0B; CCIN 577F); Adapter part number: 00E3496 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 6
EN0G PCIe2 8 Gb 2-port Fibre Channel adapter P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6 P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 (EL5Z - 0) 6 6 (EL5Z - 0)
EN0H PCIe3 4-port (10 Gb FCoE and 1 GbE) (FC EL38, FC EL56, FC EN0H, and FC EN0J; CCIN 2B93); Adapter part number: 00E3498 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL56 - 0) 6 0
EN0K PCIe3 4-port (10 Gb FCoE and 1 GbE) copper and RJ45 adapter (FC EL3C, EL57, EN0K, and EN0L; CCIN 2CC1); Adapter part number: 00E8140 (FC EN0K) and 00E3502 (FC EN0L) P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL57 - 0) 6 0
EN0M PCIe3 4-port (10 Gb FCoE and 1 GbE) LR and RJ45 adapter (FC EN0M and FC EN0N) P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 0
EN0S PCIe2 4-port (10 Gb + 1 GbE) SR+RJ45 adapter (FC EN0S, FC EN0T, FC EN0U, and FC EN0V; CCIN 2CC3); Adapter part number: 00E2715 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 0s
EN0U PCIe2 4-port (10 Gb + 1 GbE) Copper SFP+RJ45 adapter (FC EN0U; CCIN 2CC3); Adapter part number: 00E2715; low-profile tailstock: 00E2720 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 0
EN0W PCIe2 2-port 10 GbE BaseT RJ45 Adapter P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 (EL55 - 0) 6 0
EN12 PCIe2 FH 4-port 8 Gb Fibre Channel adapter (FC EN12; CCIN EN0Y); Adapter part number 00WT107 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 0
EN13 PCIe Binary Synchro- nous adapter (FC EN13 and EN14; CCIN 576C) P1-C6, P2-C6 0 0 1
EN15 PCIe3 4-port 10 GbE SR adapter (FC EN15 and EN16; CCIN 2CE3); Adapter part number: 00ND466 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 6
EN17 PCIe3 4-port 10 GbE SFP+ copper adapter (FC EN17 and EN18, CCIN 2CE4); Adapter part number: 00ND463 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 6
EN1A PCIe3 x8 2-port Fibre Channel (32 Gb/s) P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 (EL5U - 0) 6 6 (EL5U-0)
EN1C PCIe3 x8 4-port Fibre Channel (16 Gb/s); (FC EL5W, EL5X, EN1C, and EN1D; CCIN 578E); Adapter part number: 01FT698 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 (EL5W - 0) 6 6 (EL5W - 0)
EN1E PCIe3 x8 4-port Fibre Channel (16 Gb/s); (FC EN1E and EN1F; CCIN 579A); Adapter part number: 02JD586 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EN1G PCIe3 x8 2-port Fibre Channel (16 Gb/s) (EN1G and EN1H; CCIN 579B); Adapter part number: 02CM900 and 02CM903 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 6
EN1J PCIe4 x8 2-port Fibre Channel (32 Gb/s); (FC EN1J and EN1K; CCIN 579C); Adapter part number: 02CM909 P1-C2, P2-C2, P1-C5, P2-C5, P1-C3, P2-C3, P1-C6, P2-C6, P1-C1, P2-C1, P1-C4, P2-C4 6 6 6
EN2A PCIe3 16 Gb 2-port Fibre Channel adapter (FC EN2A and FC EN2B; CCIN 579D); Adapter part number: 02JD564 P1-C1, P2-C1, P1-C4, P2-C4, P1-C2, P2-C2, P1-C3, P2-C3, P1-C5, P2-C5, P1-C6, P2-C6 6 6 6

1The slot priority sequence is based on a EMX0 PCIe3 expansion drawer configured with two PCIe3 6-slot fanout modules.

2The maximum number of adapters supported per PCIe3 6-slot fanout module.

3If you have a CCIN 50CB PCIe3 6-slot fanout module, the FC EC2S and FC EC2U adapters are only supported in slots C2 and C5. If you have a CCIN 50CD PCIe3 6-slot fanout module, the FC EC2S and FC EC2U adapters are supported in slots C1 through C6, but only four FC EC2S and FC EC2U adapters can be in SR-IOV mode at a time.