Rorke Data The Galaxy 65 Especificaciones descargar pdf (Pagina 57)

Chapter 4: Subsystem Connection and Operation

4-1

Chapter 4

Subsystem Connection and

Operation

This chapter introduces sample topologies, configuration options and server connections for the

Galaxy subsystems and discusses both the power on and power off procedures.

4.1 FC Host Connection Prerequisites

NOTE:

The topics covered in Section 4.2 only pertain to the FC models.

4.1.1 Cabling

The FC Standard allows for optical connections. Optical cables can be used over long

distances, have been shown to be more reliable, and are less susceptible to EMI. Due to

the extremely high data transfer rates, Fiber-optic cables are preferred for 4Gbps FC

connectivity.

WARNING!

All cables must be handled with care. To prevent interference within a rack system,

the cable routing path must be carefully planned and they must not be bent.

4.1.2 FC Lasers

WARNING!

asers can be hazardous and may cause permanent eye damage or blindness, and

therefore must be carefully handled and used with caution. Never look at lasers

without knowing whether they are on or off. Carefully read the associated warning

messages that shall be provided with the SFP transceivers you purchase.

Wavelengths: The lasers on FC fiber optic cables emit either short wave (SW) beams

(770nm - 860nm) or long wave (LW) (1270 nm - 1355 nm) beams. Depending on the

transceiver type you selected, cables using either of these wavelengths can be used.

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Rorke Data The Galaxy 65 Especificaciones Pagina 57