5137ch01.fm
Draft Document for Review October 14, 2014 10:19 am
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IBM Power Systems E870 and E880 Technical Overview and Introduction
expansion drawer (#EMX0) holds two expansion modules which are attached to any two x16
PCIe slots in the same system node or in different system nodes.
Disk-only I/O drawers (#5887) are also supported, providing storage capacity.
1.6.1 PCIe Gen3 I/O expansion drawer
The 19-inch 4 EIA (4U) PCIe Gen3 I/O expansion drawer (#EMX0) and two PCIe FanOut
Modules (#EMXF) provide twelve PCIe I/O full-length, full-height slots. One FanOut Module
provides six PCIe slots labeled C1 through C6. C1 and C4 are x16 slots and C2, C3, C5, and
C6 are x8 slots. PCIe Gen1, Gen2, and Gen3 full-high adapter cards are supported.
A blind swap cassette (BSC) is used to house the full-high adapters that go into these slots.
The BSC is the same BSC as used with the previous generation server's 12X attached I/O
drawers (#5802, #5803, #5877, #5873). The drawer is shipped with a full set of BSC, even if
the BSC is empty.
Concurrent repair and add/removal of PCIe adapter cards is done by HMC guided menus or
by operating system support utilities.
A PCIe X16 to Optical CXP converter adapter (#EJ07) and 2.0 M (#ECC6) or 10.0 M
(#ECC8) CXP 16X Active Optical cables (AOC) connect the system node to a PCIe FanOut
module in the I/O expansion drawer. One feature #ECC6 or one #ECC8 ships two AOC
cables. Each PCIe Gen3 I/O expansion drawer has two power supplies.
In 2014, a system node supports either zero or two PCIe Gen3 I/O expansion drawers.
Connecting a single drawer to a system node is not supported.
Figure 1-9 shows a PCIe Gen3 I/O expansion drawer.
Figure 1-9 PCIe Gen3 I/O expansion drawer
