IBM 8247-21L Manual page 20

Table 4. PCIe slot locations and descriptions for the 5148-21L, 5148-22L, 8247-21L, 8247-22L, 8284-21A, or
8284-22A system (continued)
Slot Location Description PHB
code
2, 6
Slot 9 P1-C10 PCIe3, x8
2
Slot 10 P1-C11 PCIe3, x8
2, 6
Slot 11 P1-C12 PCIe3, x8
1
Slot is a direct slot from the Processor Module and is a high-performance slot. The connectors in these slots are differently colored than the slots
from the PCIe3 switches.
2
Slot connected by the PCIe3 switches.
3
Slot is not available to install other adapters in the expanded function system backplane.
4
The I/O Adapter Enlarged Capacity assignment order value is 6 for one processor or 8 for two processors.
5
Assigned PCIe slot order when the I/O Adapter Enlarged Capacity option is enabled. For example, if the option was enabled with a value of 5 on a
two processor system, five slots (P1-C6, P1-C7, P1-C10, P1-C12, and P1-C2) are enabled with the I/O enlarged capacity. If the option was enabled
with a value of 7 on a two processor system, then six slots (P1-C6, P1-C7, P1-C10, P1-C12, P1-C2, and P1-C11) are enabled with the I/O enlarged
capacity, and so on.
Note: Enabling the I/O Adapter Enlarged Capacity option will only affect Linux partitions. If your system does not have Linux partitions, the I/O
Adapter Enlarged Capacity setting should be disabled.
6
For platforms with less than 64GB of total system memory, SR-IOV should not be configured in these slots as performance may be severely
impacted.
v All slots are PCIe generation 3 slots.
v The peak bandwidths supported by the x16 slots are 16 gigabytes per second (GBps) in simplex mode and 32 GBps in duplex mode.
v The peak bandwidths supported by the x8 slots are 8 GBps in simplex mode and 16 GBps in duplex mode.
v All slots support enhanced error handling (EEH).
v All PCIe slots are hot swappable and support concurrent maintenance.
PCIe adapters placement rules
Use this information while selecting slots for installing PCIe adapters in the 5148-21L, 5148-22L, 8247-21L,
8247-22L, 8284-21A, or 8284-22A system. Use Table 5 on page 5 to identify slot placement priorities in the
system and the maximum number of adapters that can be installed in the system
1. The slot P1-C10 must be used to install the local area network (LAN) adapter feature codes (FCs)
EN0T, EN0V, or EN0X. Any other PCIe adapter feature is not supported in this slot.
2. The PCIe3 cable adapter (FC EJ05) is supported in slots P1-C6 and P1-C3.
Note: This is a double-wide adapter that requires two adjacent slots.
3. CAPI accelerator adapters are supported in slots P1-C6, P1-C7, P1-C3, and P1-C5.
4. Slots P1-C3, P1-C5, P1-C6, and P1-C7 are x16 slots with busses direct from the Processor Modules and
can be used to install high-performance PCIe adapters. The adapter priority for these slots is for CAPI
accelerator adapters (for example, EJ16), PCI accelerator adapters (for example, EJ13), and then for the
high-performance adapters, followed by any other adapter.
5. Slots P1-C2 is an x8 slot with bus direct from the Processor Modules and can be used to install
high-performance PCIe adapters. The adapter priority for this slot is for the high-performance
adapters followed by any other adapter.
4
Power Systems: PCIe adapter placement for the 5148-21L, 5148-22L, 8247-21L, 8247-22L, 8284-21A, or 8284-22A
Adapter
size
CAPI
PCIe3 Low-profile No
Switch 2,
S1P9
PCIe3 Low-profile No
Switch 1,
S0P1
PCIe3 Low-profile No
Switch 1,
S1P9
Slot capabilities
SR-IOV Dynamic I/O adapter
direct enlarged
memory capacity
access assign
(DMA) order
window
Yes Yes Default
No Yes 7
Yes Yes Default
Slot availability in
8247-21L, 8247-22L,
8284-21A, 8284-22A,
8284-22A, or 5148-22L
or 5148-21L
5
2
1 processor processors
Dedicated slot for the
LAN adapter
Yes Yes
Yes Yes