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800007 rev C1
Huge Systems U320-R User’s Guide
Page 13 of 28
MODE SET / REBUILD Button
This switch has a dual role function. During power up, it acts as a Mode Set switch and during normal
operation it is used as the Start Rebuild switch.
During the 1
st
20 seconds of power up, this switch acts as a Mode Set switch and is used in conjunction
with the Mode Selection option. See the Mode Selection section for additional information.
During normal operation and only when the U320-R is in the RAID 3 modes, this switch is used to start a
drive rebuild process. When a defect drive has been replaced, this rebuild process brings the U320-R back
up to it’s fully protected mode. See Audible Alarm and Drive Replacement sections for additional
information.
SCSI connections
The U320-R have a pair of SCSI 68-pin high density (68HD) connectors. They function as an IN and an
OUT connection with internal loop-through for the SCSI channel. This SCSI channel is compatible with
Ultra320, Ultra160, Ultra2, and other SCSI standards. HVD (High Voltage Differential) is not supported.
Host connections
Use a Ultra320 rated SCSI cable to connect the SCSI channel to your host computer. Connect the SCSI IN
of the U320-R to the SCSI channel of the computer.
Terminator
Use a Ultra320 rated SCSI terminator to terminate the SCSI connection. Connect the terminator to SCSI
OUT.
U320-R
Editing Computer
SCSI IN
SCSI OUT
SCSI
Host SCSI connections and terminations
Install
Terminator