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Chapter 2: Hardware Installation
2.3.2
Fiber-Host Connections
The FC (Fiber Channel) standard allows optical connections. The optical cables are used over long
distances and have been proven to be more reliable. Due to the demands of high transfer rates, optical
cables are preferred for a 4 Gbps, 8 Gbps, 16 Gbps, or 32 Gbps fiber connectivity, as they are not
vulnerable to EMI.
The fiber host ports are connected to fiber channel HBAs (host bus adapters) that feature SFP interface
with full duplex transfer support in a PCIe interface. For the latest certified items, please contact the
vendor near you.
WARNING!
• All fiber cables are sensitive and must be handled with care. To avoid interference, the cabling path
must be carefully planned without the cables getting bent.
• Lasers are hazardous and may cause blindness or permanent eye damage. Use them with utmost
caution. Never look directly when lasers are turned on or operating.
Detecting Auto Speed
Speed auto-detection is specified by the fiber channel standard. If a 16 Gbps port is connected to an
8 Gbps port, the speed slows down at 8 Gbps. If there are 16 Gbps ports on both ends of the link, the
speed runs at 16 Gbps.
SFP/SFP+ Transceivers
An SFP transceiver converts electrical data signals into light signals then transfers these signals
transparently via the optical fiber. A transceiver provides bi-directional data links, a laser transmitter (for
fiber optic cables), LC connector, and a metal enclosure to lower the EMI.
Other features of a typical SFP transceiver include a single power supply, low power dissipation, and
hot-swap capability. It is also important that the transceiver you use meets the FC performance and
reliability specifications.
WARNING!
The SFP transceiver has a laser diode featuring a Class 1 laser. To ensure safety, DO
NOT remove any covers or attempt access of the inside of the device. If problems arise or if you need
technical service, contact qualified personnel.
FC Port Dust Caps
Dust caps are bundled in the package. Whenever a onboard host port cable is not plugged in, insert the
dust cap.
Dust cap
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