FW V06.XX/HAFM SW V08.02.00 HP StorageWorks SAN High Availability Planning Guide (AA-RS2DD-TE, July 2004)

Physical Planning Considerations
137SAN High Availability Planning Guide
Figure 54: SFP transceiver and LC duplex connector
Routing Fiber-Optic Cables
Follow a logical plan for routing fiber-optic cables to avoid confusing connections
during installation and operation. Route cables from the access holes at the bottom
or top of the equipment rack, and then to director and switch ports.
Leave enough slack in the cables to allow cable movement for UPM card or
optical transceiver removal and replacement or possible rerouting of the cable to
another port.
When routing fiber-optic cables and estimating cable lengths, consider:
■ Cable routing inside the equipment rack to different port locations and
installation position of the director or switch (top or bottom of the rack). Plan
for 1.0 meter (39.37 inches) of extra cable for routing through restraint
mechanisms and rerouting cables to other ports.
■ Cable routing outside the equipment rack. Plan for 1.5 meters (5 feet) of cable
outside the rack to provide slack for service clearance, limited rack
movement, and inadvertent cable pulls.
■ Cabling distance to servers, storage devices, and other fabric elements
(for multi-switch fabric support).
The need for additional fiber-optic cabling could grow rapidly. More cables may
be required for connections to additional servers or storage devices or for
connections to additional fabric elements as a multi-switch fabric is developed.
The director or switch may need to be moved for more efficient connection to