Cable Type And Transmission Rate Versus Distance And Link Budget - McDATA StorageWorks 64 - SAN Director Switch Planning Manual

Cable Type and Transmission Rate versus Distance and Link Budget

Table 5-1
Cable Type and Data Transmission Rate
62.5/125 micron multimode at 1.0625 Gbps
62.5/125 micron multimode at 2.1250 Gbps
62.5/125 micron multimode at 10.2000 Gbps
50/125 micron multimode at 1.0625 Gbps
50/125 micron multimode at 2.1250 Gbps
50/125 micron multimode at 10.2000 Gbps
9/125 micron singlemode at 1.0625, 2.1250, or
10.2000 Gbps (10-kilometer SFP optical transceiver)
9/125 micron singlemode at 1.0625 or 2.1250 Gbps
(20-kilometer SFP optical transceiver)
9/125 micron singlemode at 1.0625, 2.1250, or
10.2000 Gbps (35-kilometer SFP optical transceiver)
Cost Effectiveness
Device or Cable
Restrictions
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.
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.
Physical Planning Considerations
Unrepeated Distance
250 meters (820 feet)
120 meters (394 feet)
75 meters (246 feet)
500 meters (1,640 feet)
300 meters (984 feet)
150 meters (492 feet)
10.0 kilometers (6.2 miles)
20.0 kilometers (12.4 miles)
35.0 kilometers (21.7 miles)
Physical Planning Considerations
Link Budget
2.8 dB
2.2 dB
xxx dB
3.9 dB
2.8 dB
xxx dB
7.8 dB
7.8 dB
7.8 dB
5-5
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