The Sun StorageTek 4Gb Fibre Channel (FC) Network Express Module (NEM) (Emulex) consists of a 20-port NEM bus expansion board that interfaces a 10-lane (20-lane physical) PCI Express (PCIe) bus to an FC optical media bus. The FC NEM provides closed chassis adapter installation, removal, integrated hot-plug, and protection from electrostatic discharge (ESD) handling damage.
The StorageTek FC NEM can act as either an initiator or a target. The board supports ten independent FC buses operating at 4.25 Gbps. It is also backward compatible with 2.125 Gbps and 1.0625 Gbps devices. Small Form Factor (SFF) optical transceivers are used to connect to the external FC buses.
The following table lists the StorageTek FC NEM features.
Feature |
Description |
---|---|
HBA interface |
Ten PCIe x8 lanes (ten x4 active lanes) |
FC interface |
Dual port 4, 2, 1 Gbs auto-speed negotiation |
FC topology |
Point-to-point (N-port), Arbitrated Loop (NL_port) and Switched Fabric (N_port) |
PCI transfer rate (maximum) |
PCIe Generation One (2.5 Gbps) x4 |
FC interface chip |
Zephyr |
Onboard memory |
One 4-MB flash ROM per chip, 40MB total, field-programmable One 1.5 MB SRAM per chip, 15 MB total NEM SRAM |
External FC connectors |
Small form factor pluggable (SFP) multimode optic with LC-style connector |
Maximum FC cable length |
1 Gbps: 500 meters using 50/125 µm core fiber - - - - - -300 meters using 62.5/125 µm core fiber 2 Gbps: 300 meters using 50/125 µm core fiber - - - - - -150 meters using 62.5/125 µm core fiber 4 Gbps: 150 meters using 50/125 µm core fiber - - - - - -70 meters using 62.5/125 µm core fiber |
LED indicators |
Two LEDs per channel (yellow, green) on front panel as status indicators Power LED, Attention LED, and Attention button on front panel to support hot-swap functionality |
Form Factor |
PCIe NEM |
For more information, see the Sun StorageTek 4Gb FC NEM Host Bus Adapter User's Guide (Sun Part number: 819-7929) at Sun Documentation.