IBM EN0A 16Gb 2-Port PCIe2 (x8) SR SFP+ Fibre Channel Adapter (FH)

The PCIe3 16 Gb 2-port Fibre Channel Adapter is an x8, generation 3, PCIe adapter. This adapter is a high-performance 8x short form adapter also referred to as a PCIe Host Bus Adapter (HBA). The adapter provides two ports of 16 Gb Fibre Channel capability using SR optics. Each port can provide up to 16 Gb Fibre Channel functions simultaneously.

Each port provides single initiator capability over a fibre link or with NPIV, multiple initiator capability is provided. The ports are SFP+ and include an optical SR transceiver. The ports have little connector-type (LC) and utilize shortwave laser optics. The adapter operates at link speeds of 4, 8 and 16 Gbps and will automatically negotiate to the highest speed possible. LEDs on each port provide information on the status and link speed of the port.

The adapter connects to a Fibre Channel switch at 4 Gb, 8 Gb or 16 Gb. It can directly attach to a device without a switch at 16 Gb. Attachment without a switch is not supported at 4 Gb or 8 Gb.

N_Port ID Virtualization (NPIV) capability is supported through VIOS.

The adapter has the following features:

• This adapter has parts and construction compliant with the European Union Directive of Restriction of Hazardous Substances (RoHS)
• The adapter is compliant with the PCIe base and Card Electromechanical (CEM) 2.0 specifications with the following characteristics:
  • Provides an x8 lane link interface at 14.025 Gbps, 8.5 Gbps, or 4.25 Gbps (automatic negotiation with system)
  • Provides support for one Virtual Channel (VC0) and one Traffic Class (TC0)
  • Provides configuration and I/O memory read and write, completion, and messaging capabilities
  • Provides support for 64-bit addressing
  • Provides error correction code (ECC) and error protection functions
  • Provides link cyclic redundancy check (CRC) on all PCIe packets and message information
  • Provides a large payload size of 2048 bytes for read and write functions
  • Provides a large read request size of 4096 bytes
• The adapter is compatible with 4, 8, and 16 Gb Fibre Channel interface with the following characteristics:
  • Provides for automatic negotiation between 4 Gb, 8 Gb, or 16 Gb link attachments
  • Provides support for the following Fibre Channel topologies: point-to-point (16Gb only) and fabric
  • Provides support for Fibre Channel class 3
  • Provides a maximum Fibre Channel throughput that is achieved by using full duplex hardware support
• The adapter provides an end-to-end data path parity and CRC protection, including internal data path random-access memory (RAM)
• Provides architectural support for multiple upper layer protocols
• Provides comprehensive virtualization capabilities with support for N_Port ID Virtualization (NPIV) and virtual fabric (VF)
• Provides support for message signaled interrupts extended (MSI-X)
• Provides support for 255 VFs and 1024 MSi-X
• Provides an internal, high-speed static random-access memory (SRAM) memory
• Provides ECC protection of local memory that includes single-bit correction and double-bit protection
• Provides an embedded shortwave optical connection with diagnostics capability
• Provides support for an on-board context management by firmware:
  • Up to 8192 FC port logins
  • I/O multiplexing down to the Fibre Channel frame level
• Provides data buffers capable of supporting 64+ buffer-to-buffer (BB) credits per port for shortwave applications
• Provides link management and recovery that is handled by firmware
• Provides on-board diagnostic capability accessible by an optional connection
• Provides a performance up to 16 Gbps full duplex

NoteThe wrap plug is included with the card, and can also be purchased from IBM®.I/O bus architecturePCIe base and CEM 3.0, x8 PCIe bus interfaceSlot requirementFor details about slot priorities and placement rules, seePCIe adapter placement rules and slot prioritiesand select the system you are working on.Voltage3.3 V, 12 VForm factorShort, MD2FC compatibility4, 8, 16 GbCablesCables are the responsibility of the customer. Use multimode fiber optic cables with shortwave lasers that adhere to the following specifications:

• OM4: Multimode 50/125 micron fiber, 4700 MHz x km bandwidth
• OM3: Multimode 50/125 micron fiber, 2000 MHz x km bandwidth
• OM2: Multimode 50/125 micron fiber, 500 MHz x km bandwidth
• OM1: Multimode 62.5/125 micron fiber, 200 MHz x km bandwidth

Because core sizes are different, OM1 cables can only be connected to other OM1 cables. For best results, OM2 cables must not be connected to OM3 cables. However, if an OM2 cable is connected to an OM3 cable, the characteristics of the OM2 cable apply to the entire length of the cables.The following table shows the supported distances for the different cable types at the different link speeds.Table 1. Supported distances for cablesHeaderCable type and distanceRateOM1OM2OM3OM44 Gbps0.5 - 70 m (1.64 - 229.65 ft)0.5 - 150 m (1.64 - 492.12 ft)0.5 - 380 m (1.64 - 1246.71 ft)0.5 - 400 m (1.64 - 1312.34 ft)8 Gbps0.5 - 21 m (1.64 - 68.89 ft)0.5 - 50 m (1.64 - 164.04 ft)0.5 - 150 m (1.64 - 492.12 ft)0.5 - 190 m (1.64 - 623.36 ft)16 Gbps0.5 - 15 m (1.64 - 49.21 ft)0.5 - 35 m (1.64 - 114.82 ft)0.5 - 100 m (1.64 - 328.08 ft)0.5 - 125 m (1.64 - 410.10 ft)Maximum numberFor details about the maximum number of adapters that are supported, seePCIe adapter placement rules and slot prioritiesand select the system you are working on..Operating system or partition requirements

If you are installing a new feature, ensure that you have the software that is required to support the new feature and that you determine whether any prerequisites must be met for this feature and attaching devices.To check for the prerequisites, seeIBM Prerequisite website.

The adapter is supported on the following versions of the operating systems:

• AIX®
  • AIX 7.1, or later
  • AIX 6.1, or later
• Linux
  • Red Hat Enterprise Linux
  • SUSE Linux Enterprise Server
  • For support details, see theLinux Alert website.
• IBM i
  • IBM iVersion 7.2 or later
  • IBM iVersion 7.1, or late