Chapter 2. Architecture and technical overview
47
Table 2-13 summarizes the maximum numbers of adapters and bandwidths for different
configurations of the Power E850C server.
Table 2-13 Maximum PCIe adapters and bandwidth supported on the Power E850C
2.8 Internal I/O connections
The internal I/O subsystem resides on the I/O planar, which supports all of the PCIe Gen3
x16 and x8 slots. All PCIe slots are hot-pluggable and enabled with Enhanced Error Handling
(EEH). In the unlikely event of a problem, EEH-enabled adapters respond to a special data
packet that is generated from the affected PCIe slot hardware by calling system firmware. The
firmware examines the affected bus, allows the device driver to reset it, and continues without
a system reboot. For more information about RAS on the I/O buses, see 4.3.11, “I/O
subsystem availability and Enhanced Error Handling” on page 111.
All of the PCIe slots within the system enclosure support full-height half-length PCIe cards.
These can be PCIe Gen1, Gen2, or Gen3 adapters. The server also supports full-height
full-length audiotapes in the I/O expansion drawer. For more information, see 2.11.1, “PCIe
Gen3 I/O expansion drawer” on page 62.
Table 2-14 lists the slot configuration of the Power E850C server.
Table 2-14 Slot configuration and capabilities
Processor
Modules
Maximum PCIe
bandwidth
PCIe slots in
server enclosure
Maximum I/O
expansion drawers
Maximum PCIe
slots supported
Two
192 GBps
7
2
27
Three
256 GBps
9
3
39
Four
320 GBps
11
4
51
Slot
Location code
Slot type
CAPI capable
SRIOV capable
Slot 1
a
a. Slots 1 and 2 are only active when the fourth processor module is installed.
P1-C1
PCIe Gen3 x16
Yes
Yes
Slot 2
b. This slot is capable of supporting 75 W adapters.
P1-C2
PCIe Gen3 x16
Yes
Yes
Slot 3
c
c. Slots 3 and 4 are only active when the third processor module is installed.
P1-C3
PCIe Gen3 x16
Yes
Yes
Slot 4
P1-C4
PCIe Gen3 x16
Yes
Yes
FSP slot
d
N/A
N/A
Slot 5
P1-C6
PCIe Gen3 x8
No
Yes
Slot 6
P1-C7
PCIe Gen3 x8
No
Yes
Slot 7
P1-C8
PCIe Gen3 x16
Yes
Yes
Slot 8
P1-C9
PCIe Gen3 x16
Yes
Yes
Slot 9
P1-C10
PCIe Gen3 x16
Yes
Yes
Slot 10
e
P1-C11
PCIe Gen3 x8
No
Yes
Slot 11
P1-C12
PCIe Gen3 x16
Yes
Yes
Summary of Contents for E850C
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