Installing External Scsi Devices - Silicon Graphics Octane2 Owner's Manual

Installing External SCSI Devices

Following are some tips for connecting SCSI devices to your workstation.
• You can mix Ultra and Fast devices on the same bus. You can also mix 16-bit and
8-bit devices on the same bus. The overall performance of a mixed bus can vary
widely.
• To daisy-chain a mix of wide and narrow devices, place the wide devices (as a
group) closest to the Octane2 workstation where the bus is wide, and place the
narrow devices (as a group) at the end of the daisy chain.
Be sure to use an adapter or other special cable that terminates the upper half
Note:
of the SCSI bus when converting from the final wide device to the first narrow
device. SGI integrates termination into all SGI-supplied cables, but not all third-party
cables have integrated termination.
• Unsupported devices may not work with the Octane2 workstation, and may be
incompatible with supported devices.
• The combined length of all the SCSI cables on a daisy-chain determines how many
devices can be daisy-chained.
• Set addresses manually only on external SCSI devices. See the device manual for
setting the address on the device. Each device must have a unique address.
• Drives are easily damaged. Handle your drive carefully; do not drop it or handle it
roughly.
This section shows you how to connect external SCSI devices to your workstation.
External devices include:
• DAT or DLT tape drives
• CD-ROM drives
• Floppy drives
• Other external SCSI devices
For information about SCSI bus and device speeds, see "About SCSI Buses and Devices"
on page 130.
Installing External SCSI Devices
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