Setup guide

Connecting the SCSI Local Storage Systems
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Avid MediaDock Ultra320
The Avid MediaDock Ultra320 enclosure has 12 slots for the shuttle drives. The Avid
MediaDock Ultra320 can be configured in either a single-bus or a dual-bus configurations.
The Avid DS configuration supports a minimum of 8 SCSI drives in the Avid MediaDock
Ultra320. At this time Avid DS supports the following two configurations of the Avid
MediaDock Ultra320:
• Single enclosure—using Avid MediaDock Ultra320 enclosure in the dual-bus
configuration. The dual-bus configuration is half the drives attached to SCSI channel A
and the other half connected to SCSI channel B.
For example, six drives are connected to SCSI bus channel A and the remaining six
drives are connected to SCSI bus channel B. In this configuration, you can have a
maximum of 12 drives, 6 each on each SCSI bus.
• Dual enclosures—one Avid MediaDock Ultra320 enclosure attached to each SCSI
channel.
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The Dual Bus LED is Off when the MediaDock Ultra320 is in single-bus mode.
The Avid MediaDock Ultra320 storage enclosure is factory configured as a single-bus (12-
drive) enclosure. In single-bus mode, you can connect your SCSI cable to either SCSI port
on the MediaDock Ultra320 enclosure. The MediaDock Ultra320 is self-terminated for both
single- and dual-bus configurations and does not need to be terminated externally.
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For installation procedures and instructions on switching between single and dual modes,
see the documentation that ships with the Avid MediaDock Ultra320.
For best performance with your Avid DS Nitris, Avid recommends that you use two Avid
MediaDock Ultra320 enclosures in single-bus mode. Create a two-way stripe across both
SCSI bus channels using 24 SCSI drives (12 in each enclosure). For striping information see
the Avid DS Installation & Administration Guide.