HP Surestore 64 Planning Guide - Page 33

FPM Card Each FPM card provides four full-duplex generic ports (G_Ports) that transmit or receive data at 1.0625 gigabits per second (Gbps). G_Port functionality depends on the type of cable attachment. FPM cards use non-open fiber control (OFC) Class 1 laser transceivers that comply with Section 21 of the Code of Federal Regulations (CFR), Subpart (J) as of the date of manufacture. Depending on device connections, G_Ports behave as follows: • If the G_Port is attached to a Fibre Channel device, the port functions as a fabric port (F_Port). An F_Port is the interface on a director that connects to a device node port (N_Port). • If the G_Port is attached to a fabric element, the port functions as an expansion port (E_Port). Singlemode or multimode fiber-optic cables attach to FPM cards through small form factor pluggable (SFP) optical transceivers. The transceivers provide duplex LC® connectors, and can be detached from FPM cards (through a 10-pin interface) for easy replacement. Two optical transceiver types are available: • Shortwave Laser Shortwave laser transceivers provide connections for transferring data over short distances (2 to 500 meters) through 50-micron or 62.5-micron multimode fiber. • Longwave Laser Longwave laser transceivers provide connections for transferring data over long distances (up to 10 kilometers) through 9-micron singlemode fiber. Figure 5 illustrates the faceplate of an FPM card. The card faceplate contains: • Four duplex LC connectors for attaching fiber-optic cables. • An amber LED (at the top of the card) that illuminates if any port fails or blinks if FRU beaconing is enabled. • A bank of amber and green LEDs above the ports. One amber LED and one green LED are associated with each port and indicate port status as follows: Director Description 19 Director Hardware Description