SGI InfiniteStorage 4000 Series Guía de usuario descargar pdf (Pagina 40)

Note: Each enclosure in a storage system must have a unique ID. If you are installing

multiple systems in one rack, there may be enclosures with the same ID numbers because

the systems are independent.

Link Rate Switch

The link rate switch is located on the same panel as the enclosure ID switch, between the

power supplies on the rear of the enclosure (see Figure 2-8). The link rate switch controls

the speed of the Fibre Channel connections to the enclosure. This switch can be set to

2 Gbit/s or 4 Gbit/s. When there is a 4 Gbit/s link present, the link rate LED illuminates

green. Callout 1 in Figure 2-8 shows the location of the link rate switch. See the section

“Rear Indicator Lights” on page 34 for more information on the link rate switch.

Figure 2-8 Link Rate Switch Location

Note: The link rate switches on all enclosures in a system should be set to the same

transfer rate.

SFP Transceivers

An SFP (small form-factor pluggable) transceiver is a module that fits into the interface

connectors on the RAID controllers and the ESM modules (see Figure 2-9). Every Fibre

Channel cable that connects to a RAID controller or ESM module requires an SFP

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SGI InfiniteStorage 4000 Series Guía de usuario Pagina 40