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Other Installation Issues 29
6-00020-02
SNC 5100
Inadequate cables
Older cables may not be suitable for running at Ultra speeds. Be sure all cables
are rated for Ultra.
Mixed cable types
If a SCSI bus has both round cables and flat ribbon cables, it may suffer
problems when running at Ultra speeds. Use the same cable type consistently
for all segments of the SCSI bus.
Unshielded cables
An unshielded SCSI cable used external to a cabinet may cause reliability
problems, due to interference from other electrical devices. Use only shielded
cables.
Fuses
The SNC 5100 has a 3.15A, 250 VAC, time delay fuse on the AC line input,
and the AC harness uses an axial lead, 250 VAC time delay fuse in the neutral
line. There are no user-serviceable parts in the SNC 5100.
Host Bus Adapter Setup
Hosts are connected to the SNC 5100 through specific Host Bus Adapters
(HBAs). The installation procedure varies slightly, depending on which adapter
you will be using. The procedure involves these steps:
Step 1. Install the adapter in the host system, following the manufacturer’s
recommendations.
Step 2. Power on the host system and update the adapter firmware, if
necessary.
Step 3. Boot the operating system and install the device driver for the HBA.
Step 4. Reboot and verify that the device driver has started and that
expected target devices are seen by the operating system.