Table 10. PCIe slot locations and descriptions for the EMX0 PCIe3 expansion drawer (continued).
Slot
Location code (Slot
label)
Description
Slot capabilities
SR-IOV
Dynamic direct
memory access
(DMA) window
I/O Adapter
Enlarged Capacity
assignment order
1
The SR-IOV capability varies in slots P1-C4 and P2-C4 based on the amount of system memory. If the EMX0 PCIe3
expansion drawer is connected to a system with a total amount of physical memory greater than or equal to 128
GB, slots P1-C4 and P2-C4 are SR-IOV capable.
2
The Dynamic direct memory access (DMA) window capability varies based on the amount of system memory. If
the EMX0 PCIe3 expansion drawer is connected to a system with a total amount of physical memory greater than or
equal to 64 GB, the slot is Dynamic direct memory access (DMA) window capable. If the total amount of physical
memory is less than 64 GB, the slot is not Dynamic direct memory access (DMA) window capable.
3
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.
Notes:
v
All slots are PCIe generation 3 slots.
v
All slots support full-length, regular-height adapters or short form-factor with a regular-height tailstock
in single-wide, generation 3, blind-swap cassettes.
v
Slots C1 and C4 in each PCIe3 6-slot fanout module are x16 PCIe3 buses and slots C2, C3, C5, and C6
are x8 PCIe buses.
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 EMX0 PCIe3 expansion
drawer attached to the system. Use Table 11 on page 35 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 PCIe adapter.
1.
If the EMX0 PCIe3 expansion drawer is configured with two PCIe3 6-slot fanout modules, distribute
the PCIe adapters across both I/O modules whenever possible.
2.
If FC EC46 is driving the internal DVD, it must be installed in the IO 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 (FanOut or DirectSlot) with the USB adapter driving the internal
DVD. If it is a FanOut module, install FC EC46 in slot Px-C3 of the FanOut module.
3.
Do not attempt to install x16 adapters in x8 slots. Doing so can damage the x16 connectors in the
EMX0 PCIe3 expansion drawer.
Verify whether the adapter is supported for your system. For details about PCIe adapter placement rules
and slot priorities, see PCIe adapter placement (http://www.ibm.com/support/knowledgecenter/
POWER8/p8hcd/p8hcd_emx0_pcibyfeature.htm).
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Power Systems: PCIe adapter placement for the 8247-42L, 8286-41A, or 8286-42A
Summary of Contents for 8286-41A
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