FW 07.00.00/HAFM SW 08.06.00 McDATA Products in a SAN Environment Planning Manual (620-000124-500, April 2005)

5
Physical Planning Considerations
5-5
Physical Planning Considerations
Cost Effectiveness Cost is another factor governing the choice of transceiver type and
optical fiber. Shortwave laser transceivers and multimode cable offer
a less expensive solution if data transmission distance is not critical.
Device or Cable
Restrictions
The choice of transceiver and cable type may be restricted or
dictated by:
• Device restrictions - Some devices may be restricted to use of
only one type of transceiver (shortwave or longwave). Refer to
the device’s supporting documentation for information.
• Existing cable restrictions - The enterprise may contain only one
type of fiber-optic cable (multimode or singlemode), and the
customer may be required to use the existing cables. Customers
may also be required to use existing copper cables for some
arbitrated loop devices.
Table 5-1 Cable Type and Transmission Rate versus Distance and Link Budget
Cable Type and Data Transmission Rate Unrepeated Distance Link Budget
62.5/125 micron multimode at 1.0625 Gbps 250 meters (820 feet) 2.8 dB
62.5/125 micron multimode at 2.1250 Gbps 120 meters (394 feet) 2.2 dB
62.5/125 micron multimode at 10.2000 Gbps 75 meters (246 feet) xxx dB
50/125 micron multimode at 1.0625 Gbps 500 meters (1,640 feet) 3.9 dB
50/125 micron multimode at 2.1250 Gbps 300 meters (984 feet) 2.8 dB
50/125 micron multimode at 10.2000 Gbps 150 meters (492 feet) xxx dB
9/125 micron singlemode at 1.0625, 2.1250, or
10.2000 Gbps (10-kilometer SFP optical transceiver)
10.0 kilometers (6.2 miles) 7.8 dB
9/125 micron singlemode at 1.0625 or 2.1250 Gbps
(20-kilometer SFP optical transceiver)
20.0 kilometers (12.4 miles) 7.8 dB
9/125 micron singlemode at 1.0625, 2.1250, or
10.2000 Gbps (35-kilometer SFP optical transceiver)
35.0 kilometers (21.7 miles) 7.8 dB