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PCI slot priorities for the 8248-L4T, 8408-E8D, or 9109-RMD
Some adapters must be placed in specific Peripheral Component Interconnect (PCI), Peripheral Component Interconnect-X (PCI-X), or PCI Express (PCIe) slots to function correctly or to perform optimally. Learn how to determine where to install PCI adapters.
PCI slot descriptions
Figure 1 shows the rear view of the system with the location codes for the PCI and GX++ adapter slots. Table 1 describes the slots. Each PCI-X DDR or PCIe is a separate PCI host bridge (PHB).
Figure 1. Rear view of system with location codes
| Slot | Location code | Description | PHB | Slot size | Direct memory access (DMA) capable | ||
|---|---|---|---|---|---|---|---|
| 8248-L4T, 8408-E8D, or 9109-RMD system | |||||||
| Slot 1 | P2-C1 | PCIe x8, generation-2 | PCIe PHB5 module A | Long | 32-bit | ||
| Slot 2 | P2-C2 | PCIe x8, generation-2 | PCIe PHB4 module A | Long | 64-bit | ||
| Slot 3 | P2-C3 | PCIe x8, generation-2 | PCIe PHB3 module A | Long | 32-bit | ||
| Slot 4 | P2-C4 | PCIe x8, generation-2 | PCIe PHB2 module A | Long | 64-bit | ||
| Slot 5 | P2-C5 | PCIe x8, generation-2 | PCIe PHB5 module B | Long | 64-bit | ||
| Slot 6 | P2-C6 | PCIe x8, generation-2 | PCIe PHB4 module B | Long | 64-bit | ||
| GX++ | P1-C2 | Location for GX++ adapter | NA | NA | NA | ||
| GX++ | P1-C3 | Location for GX++ adapter | NA | NA | NA | ||
|
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PCIe expansion units
PCIe expansion unit 5877 and 5802 are supported on the system that are running IBM® AIX®, IBM i, or Linux. The system can be configured to support up to two I/O expansion units per GX adapter.
Restriction: A
GX++ adapter that has one or two 5877 or 5802 expansion units
or one of each 5877 and 5802 expansion units
connected cannot have anything else connected to that adapter.
Note: For
optimum performance, you might want to limit the total number of expansion
units that contain high bandwidth and extra-high bandwidth adapters.
See Performance notes.
The expansion units attach to a GX++ adapter installed in the GX slots available in the system.
The maximum number of attached remote I/O drawers depends on the number of processor units in the system. Systems with one processor unit support up to four 5802 or 5877 expansion units, two per GX++ adapter.
PCIe adapters
Use this information to identify slot placement priorities and the maximum number of specified adapters allowed. Verify whether the adapter is supported for your system. For details about the supported adapters, see Supported PCI adapters for the 8248-L4T, 8408-E8D, or 9109-RMD.
| Feature code | Description | System unit slot priority3 | Maximum number of adapters supported per system |
|---|---|---|---|
| 5289 | PCIe 2-port Async EIA-232 PCIe
1X LPC Adapter (FC 5289; CCIN 57D4)
|
1, 5, 2, 6, 3, 4 | 56 |
| 5785 | 4 Port Async EIA-232 PCIe Adapter
(FC 5785; CCIN 57D2)
|
1, 5, 2, 6, 3, 4 | 184 |
| 57292, 4 | PCIe2 FH 4-port 8 Gb Fibre Channel
Adapter (FC 5729; CCIN 5729)
|
1, 5, 2, 6, 3, 4 | 24 |
| 57352 | 8 Gb PCI Express Dual-port Fibre Channel
Adapter (FC 5735; CCIN 577D)
|
1, 5, 2, 6, 3, 4 | 184 |
| 57731 | 4 Gb PCI Express Single Port Fibre
Channel Adapter (FC 5773; CCIN 5773)
|
1, 5, 2, 6, 3, 4 | 184 |
| 57742 | 4 Gb PCI Express Dual-port Fibre Channel
Adapter (FC 5774; CCIN 5774)
|
1, 5, 2, 6, 3, 4 | 184 |
| EN0A2 | PCIe2 16 Gb 2-port Fibre Channel
Adapter (FC EN0A; CCIN 577F)
|
1, 5, 2, 6, 3, 4 | 24 |
| 5748 | POWER® GXT145 PCI Express Graphics Accelerator (FC 5748; CCIN 5748)
|
1, 5, 2, 6, 3, 4 | 8 |
| EJ0J | PCIe3 RAID SAS Adapter (FC EJ0J;
CCIN 57B4)
|
1, 5, 2, 6, 3, 4 | 8 |
| EJ0L | PCIe3 12 GB Cache RAID SAS quad-port
6 Gb Adapter (FC EJ0L; CCIN 57CE)
|
1, 5, 2, 6, 3, 4 | 8 |
| EJ10 | PCIe3 4 x8 SAS Port Adapter
(FC EJ10; CCIN 57B4)
|
1, 5, 2, 6, 3, 4 | 8 |
| 52874 | PCIe2 2-port 10 GbE SR Adapter
(FC 5287; CCIN 5287)
|
1, 5, 2, 6, 3, 4 | 24 |
| 52884 | PCIe2 LP 2-port 10 GbE SFP+ Copper
Adapter (FC 5288; CCIN 5288)
|
1, 5, 2, 6, 3, 4 | 24 |
| 57082 | 10 Gb FCoE PCIe Dual-port Adapter
(FC 5708; CCIN 2B3B)
|
1, 5, 2, 6, 3, 4 |
|
| 57171 | 4-port 10/100/1000 Base-TX PCI Express Adapter (FC 5717;
CCIN 5717)
|
1, 5, 2, 6, 3, 4 | 184 |
| 57322 | 10 Gb Ethernet-CX4 PCI Express Adapter (FC 5732;
CCIN 2B43)
|
1, 5, 2, 6, 3, 4 | 128 |
| 57442, 4 | PCIe2 2x10 GbE SR 2x1 GbE UTP
Adapter (FC 5744; CCIN 2B44)
|
1, 5, 2, 6, 3, 4 | 184 |
| 57452, 4 | PCIe2 2x10 GbE SFP+ Copper 2x1
GbE UTP Adapter (FC 5745; CCIN 2B43)
|
1, 5, 2, 6, 3, 4 | 24 |
| 57671 | 2-port 10/100/1000 Base-TX Ethernet PCI Express Adapter (FC 5767;
CCIN 5767)
|
1, 5, 2, 6, 3, 4 |
|
| 57681 | 2-port Gigabit Ethernet-SX PCI Express Adapter (FC 5768;
CCIN 5768)
|
1, 5, 2, 6, 3, 4 |
|
| 57692 | 10 Gb Ethernet-SR PCI Express Adapter (FC 5769;
CCIN 2B44)
|
1, 5, 2, 6, 3, 4 | 128 |
| 57722 | 10 Gb Ethernet-LR PCI Express Adapter (FC 5772;
CCIN 576E)
|
1, 5, 2, 6, 3, 4 | 48 |
| 58991, 4 | PCIe2 4-port 1 GbE Adapter (FC
5899; CCIN 576F)
|
1, 5, 2, 6, 3, 4 | 184 |
| EC282, 4 | PCIe2 2-port 10 GbE RoCE SFP+
adapter (FC EC28; CCIN EC27)
|
1, 5, 2, 6, 3, 4 | 24 |
| EC2J1 | PCIe 2-Port 10 GbE SFN6122F Adapter
(FC EC2J; CCIN EC2G)
|
1, 5, 2, 6, 3, 4 | 4 |
| EC2K1 | PCIe 2-Port 10 GbE SFN5162F Adapter
(FC EC2K; CCIN EC2H)
|
1, 5, 2, 6, 3, 4 | 4 |
| EC302, 4 | PCIe2 2-port 10 GbE RoCE SR adapter
(FC EC30; CCIN EC29)
|
1, 5, 2, 6, 3, 4 | 24 |
| EN0H2 | PCIe2 4-port (10 Gb FCoE, 1 GbE)
SFP+ Adapter (FC EN0H, CCIN 2B93)
|
1, 5, 2, 6, 3, 4 | 24 |
| EN0K | PCIe2 4-port (10Gb FCoE and1GbE)
Copper and RJ45 Adapter (FC EN0K; CCIN 2CC1)
|
1, 5, 2, 6, 3, 4 | 8 |
| EN0S |
PCIe2 4-port (10Gb+1GbE) SR+RJ45 Adapter (FC EN0S; CCIN 2CC3)
|
1, 5, 2, 6, 3, 4 | 6 |
| EN0U |
PCIe2 4-port (10Gb+1GbE) Copper SFP+RJ45 Adapter (FC EN0U; CCIN 2CC3)
|
1, 5, 2, 6, 3, 4 | 6 |
| EN0W |
PCIe2 2-port 10 GbE BaseT RJ45 Adapter (FC EN0W; CCIN 2CC4)
|
1, 5, 2, 6, 3, 4 | 6 |
| 2728 | 4-port USB PCIe Adapter (FC 2728;
CCIN 57D1)
|
1, 5, 2, 6, 3, 4 | 8 |
| 4808 | PCIe Cryptographic Coprocessor
(FC 4808; CCIN 4765)
|
1, 5, 2, 6, 3, 4 | 10 |
| 4809 | PCIe Cryptographic Coprocessor
(FC 4809; CCIN 4765)
|
1, 5, 2, 6, 3, 4 | 10 |
| 52852, 4 | PCIe2 2-port 4X InfiniBand QDR
Adapter (FC 5285; CCIN 58E2)
|
1, 5 | 2 |
| 2055 | PCIe RAID and SSD SAS Adapter
3 Gb with Blind-Swap Cassette (FC 2055; CCIN 57CD)
|
1, 5, 2, 6, 3, 4 | 80 |
| 5805 | PCIe 380 MB Cache Dual - x4 3
Gb SAS RAID Adapter (FC 5805; CCIN 574E)
|
1, 5, 2, 6, 3, 4 | 184 |
| 59012 | PCIe Dual - x4 SAS Adapter (FC
5901; CCIN 57B3)
|
1, 5, 2, 6, 3, 4 | 184 |
| 59032 | PCIe 380 MB Cache Dual x4 3 Gb
SAS RAID Adapter (FC 5903; CCIN 574E)
|
1, 5, 2, 6, 3, 4 | 184 |
| 59134 | PCIe2 1.8 GB Cache RAID SAS Tri-port
6 Gb Adapter (FC 5913; CCIN 57B5)
|
1, 5, 2, 6, 3, 4 | 136 |
| ESA14 | PCIe2 RAID SAS Adapter Dual-port
6 Gb (FC ESA1; CCIN 57B4)
|
1, 5, 2, 6, 3, 4 | 184 |
| ESA34 | PCIe2 RAID SAS Adapter Dual-port
6 Gb (FC ESA1; CCIN 57B4)
|
1, 5, 2, 6, 3, 4 | 34 |
| 2893 | PCI Express 2-Line WAN with Modem
(FC 2893; CCIN 576C)
|
1, 5, 2, 6, 3, 4 | 184 |
| 2894 | PCI Express 2-Line WAN with Modem
(FC 2894; CCIN 576C)
|
1, 5, 2, 6, 3, 4 | 184 |
| EN13 | PCI Express 2-Line WAN with Modem
(FC EN13; CCIN 576C)
|
1, 5, 2, 6, 3, 4 | 184 |
| EN14 | PCI Express 2-Line WAN with Modem
(FC EN14; CCIN 576C)
|
1, 5, 2, 6, 3, 4 | 184 |
| ES09 | IBM Flash Adapter 90 (PCIe2
0.9TB) (FC ES09; CCIN 578A)
|
1, 5, 2, 6, 3, 4 | 20 |
1High-bandwidth adapter. See the Performance notes before installing this adapter. 2Extra-high bandwidth adapter. See the Performance notes before installing this adapter. 3The adapters are spread across the system unit and the slot in this order for the best performance. 4PCIe2 adapters must only be installed in generation-2 PCIe slots. The PCIe2 adapters are not supported in the 5802 and 5877 expansion units. |
|||
Performance notes
Use the information in this section to help determine the maximum number of adapters that can be placed in a system while still maintaining optimum performance.
Performance notes for GX++ adapters and I/O expansion units
Note: Feature codes
(FC) 1808 (GX++ 12X DDR Dual-port IB adapter) and FC 1914 (GX++ 2-port
PCIe2 x8 adapter) are supported for the 8248-L4T, 8408-E8D, or 9109-RMD system.
When
using extra-high bandwidth adapters, the I/O expansion units must
be limited to one expansion unit per GX++ adapter. Do not connect
multiple expansion units to the same GX++ adapter.Table 2 identifies the slot placement priorities and the maximum number of specified adapters allowed for connectivity. However, for optimum performance, you can further limit the total number of high bandwidth and extra-high bandwidth adapters. If you must expand the I/O capacity of the system for extra-high bandwidth adapters, consider attaching high-performance I/O expansion units like the 5802 or 5877.
Table 3 provides guidelines about the maximum number of high bandwidth and extra-high bandwidth adapters that you can use and still maintain optimum performance.
Note: Because
of the many types of application workloads, these guidelines cannot
cover all cases. The numbers in the following table are suggestions
for single types of adapters that are running exclusively. For systems
with mixed adapter types or that have high aggregate bandwidth requirements,
consult with an IBM representative for additional guidelines.
| Adapters | PCIe adapters in system units | PCIe adapters in 5802 or 5877 I/O Expansion units | System maximum |
|---|---|---|---|
| Extra-high bandwidth storage adapters | 6 | 4 | 10 |
| High-bandwidth storage adapters | 6 | 8 | 20 |
| Extra-high bandwidth Ethernet adapters | 4 | 2 | 6 |
| High-bandwidth Ethernet adapters | 6 | 6 | 8 |
Related reference:
