Silicon Graphics POWER CHALLENGE User Manual page 50

Chapter 3: Getting Started
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To operate external SCSI devices, you must order your system's IO4 with
extra mezzanine SCSI channel daughter boards. These are the mezzanine
options mentioned in Chapter 1; they connect to the I/O panel and then to
external devices. You may also order up to two additional IO4 boards for
your server.
The maximum SCSI cable length for single-ended applications is
Note:
19.6 feet (6 meters). Differential lines are allowed a maximum of 81 feet (25
meters). Be sure to include both external and internal cabling when you
calculate the lengths for the SCSI bus. Keep cable lengths as short as possible
to ensure optimum data transfer rates.
Connecting the System to an Ethernet
Your Challenge comes standard with a 15-pin (AUI) Ethernet connector.
You can order optional boards for additional Ethernet connections.
Observe the following procedures when making Ethernet connections:
1. Identify the Ethernet drop intended for your system, and route it to the
rear of the system. Repeat for additional connections.
2. You can install the cable by pushing it through the gap between the top
of the plastic bumper and the bottom of the side panel (see Figure 3-1).
Alternately, you can push the cable into the cable trough on the lower
left side of the system; repeat as necessary. Feed the cable in until it
reaches the front of the system.
3. Plug in the Ethernet connector (make sure to secure the 15-pin
connector with the slide latch). See Figure 3-3.
Continue with any additional peripheral connections or installations, or
close and restart the system.