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IBM Flex System PCIe Expansion Node 1

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IBM Flex System PCIe Expansion Node

IBM Redbooks Product Guide

The IBM® Flex System™ PCIe Expansion Node provides the ability to attach additional PCI Express

cards, such as High IOPS SSD adapters, fabric mezzanine cards, and next-generation graphics

processing units (GPU), to supported IBM Flex System compute nodes. This capability is ideal for many

applications that require high performance I/O, special telecommunications network interfaces, or

hardware acceleration using a PCI Express GPU card. The PCIe Expansion Node supports up to four

PCIe adapters and two additional Flex System I/O expansion adapters.

Figure 1 shows the IBM Flex System PCIe Expansion Node attached to an IBM Flex System x240

Compute Node.

Figure 1. IBM Flex System PCIe Expansion Node (right) attached to an x240 Compute Node (left)

Did you know?

The PCIe Expansion Node is ideal for application environments that are written to take advantage of

acceleration and visualization performance using GPUs that are connected to Flex System Compute

nodes. It is also useful for environments that require specific PCIe adapter connectivity to a Flex System

Compute node.

Summary of content (10 pages)

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򔻐򗗠򙳰 ® IBM Flex System PCIe Expansion Node IBM Redbooks Product Guide The IBM® Flex System™ PCIe Expansion Node provides the ability to attach additional PCI Express cards, such as High IOPS SSD adapters, fabric mezzanine cards, and next-generation graphics processing units (GPU), to supported IBM Flex System compute nodes. This capability is ideal for many applications that require high performance I/O, special telecommunications network interfaces, or hardware acceleration using a PCI Express GPU card.
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Part number information Table 1.
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Features The PCIe Expansion Node has the following features: z Support for up to four standard PCIe 2.0 adapters: z Two PCIe 2.0 x16 slots that support full-length, full-height adapters (1x, 2x, 4x, 8x, and 16x adapters supported) z Two PCIe 2.0 x8 slots that support low-profile adapters (1x, 2x, 4x, and 8x adapters supported) z Support for PCIe 3.0 adapters by operating them in PCIe 2.
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Architecture Figure 3 shows the architecture of the PCIe Expansion Node when connected to a compute node. Figure 3. Architecture of the PCIe Expansion Node The Expansion Node connects to a standard-width compute node using the interposer cable which plugs into the expansion connector and interposer connector on the compute node and Expansion Node respectively. This link forms a PCIe 2.0 x16 connection between the compute node and the PCIe switch in the Expansion Node.
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When adapters are installed in the two I/O expansion slots, they connect to the chassis midplane and provide additional connections to I/O module bays in the chassis. Table 3 shows the connections between the expansion slots and the module bays. Note that the ports available from the adapter vary, depending on whether the adapter is a 2-port or 4-port adapter. Similarly, the number of ports to the I/O module depend on the number of ports activated in the switch. Table 3.
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Supported PCIe adapter cards The Expansion Node supports the following general adapter characteristics: z z z z z z z z Full-height cards, 4.2 in (107 mm) Low-profile cards, 2.5 in (64 mm) Half-length cards, 6.6 in (168 mm) Full-length cards, 12.3 in (312 mm) Support for up to four low-profile PCIe cards Support for up to two full-height PCIe cards Support for up to one full-height double-wide PCIe card Support for PCIe standards 1.1 and 2.0 (PCIe 3.0 adapters supported operating in PCIe 2.
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Supported I/O expansion cards Table 5 lists the Flex System I/O expansion cards that are supported in the PCIe Expansion Node. Table 5.
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Regulatory compliance The unit conforms to the following standards: z z z z z z z z z z z z z z z z z z z z ASHRAE Class A3 FCC - Verified to comply with Part 15 of the FCC Rules Class A Canada ICES-004, issue 3 Class A UL/IEC 60950-1 CSA C22.2 No. 60950-1 NOM-019 Argentina IEC 60950-1 Japan VCCI, Class A IEC 60950-1 (CB Certificate and CB Test Report) China CCC (GB4943); (GB9254, Class A); (GB17625.
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Notices This information was developed for products and services offered in the U.S.A. IBM may not offer the products, services, or features discussed in this document in other countries. Consult your local IBM representative for information on the products and services currently available in your area. Any reference to an IBM product, program, or service is not intended to state or imply that only that IBM product, program, or service may be used.
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This document was created or updated on August 1, 2012. Send us your comments in one of the following ways: Use the online Contact us review form found at: ibm.com/redbooks Send your comments in an e-mail to: z redbook@us.ibm.com Mail your comments to: z IBM Corporation, International Technical Support Organization Dept. HYTD Mail Station P099 2455 South Road Poughkeepsie, NY 12601-5400 U.S.A. z This document is available online at http://www.ibm.com/redbooks/abstracts/tips0906.html .