HP Surestore 64 Planning Guide - Page 68

Port Connectivity and Fiber-Optic Cabling, Port Requirements

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Port Connectivity and Fiber-Optic Cabling This section provides planning recommendations for director port connectivity and fiberoptic cabling. Specific recommendations are provided for: • Port requirements (number and type of ports). • Extended-distance ports. • High availability considerations. • Cabling and connectors. • Routing fiber-optic cables. Port Requirements Plan for sufficient shortwave laser ports and longwave laser ports to meet the needs of the configuration. The number of ports required is equal to the number of device connections (including redundant connections), plus the number of interswitch links (ISLs) between directors, plus the total number of spare port connections. The director is configured from a minimum of eight fiber port module (FPM) cards (32 ports) to a maximum of 16 FPM cards (64 ports). FPM cards can accommodate up to four shortwave laser transceivers, four longwave laser transceivers, or a mixture of both. • Shortwave transceivers provide a connection for multimode cable with a core diameter of 50 microns and a cladding diameter of 125 microns (50/125), or multimode cable with a core diameter of 62.50 microns and a cladding diameter of 125 microns (62.5/125). A 50/125 micron cable link allows a maximum director-to-device or director-to-director distance of up to 500 meters. A 62.5/125 micron cable link allows a maximum directorto-device or director-to-director distance of up to 175 meters. • Longwave transceivers provide a connection for singlemode cable with a core diameter of 9 microns and a cladding diameter of 125 microns (9/125). A 9/125 micron cable link allows a maximum director-to-device or director-to-director distance of up to 10 kilometers. 54 Port Connectivity and Fiber-Optic Cabling

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54
Port Connectivity and Fiber-Optic Cabling
Port Connectivity and Fiber-Optic Cabling
This section provides planning recommendations for director port connectivity and fiber-
optic cabling. Specific recommendations are provided for:
•
Port requirements (number and type of ports).
•
Extended-distance ports.
•
High availability considerations.
•
Cabling and connectors.
•
Routing fiber-optic cables.
Port Requirements
Plan for sufficient shortwave laser ports and longwave laser ports to meet the needs of the
configuration. The number of ports required is equal to the number of device connections
(including redundant connections), plus the number of interswitch links (ISLs) between
directors, plus the total number of spare port connections.
The director is configured from a minimum of eight fiber port module (FPM) cards (32
ports) to a maximum of 16 FPM cards (64 ports). FPM cards can accommodate up to four
shortwave laser transceivers, four longwave laser transceivers, or a mixture of both.
•
Shortwave transceivers provide a connection for multimode cable with a core diameter
of 50 microns and a cladding diameter of 125 microns (50/125), or multimode cable with
a core diameter of 62.50 microns and a cladding diameter of 125 microns (62.5/125).
A 50/125 micron cable link allows a maximum director-to-device or director-to-director
distance of up to 500 meters. A 62.5/125 micron cable link allows a maximum director-
to-device or director-to-director distance of up to 175 meters.
•
Longwave transceivers provide a connection for singlemode cable with a core diameter
of 9 microns and a cladding diameter of 125 microns (9/125). A 9/125 micron cable link
allows a maximum director-to-device or director-to-director distance of up to 10
kilometers.