Description Of Modes; Mode Flow At Start-Up - Canon imageRUNNER ADVANCE 8105 Series Service Manual

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Technology > Main Controller > Controls > HDD mirroring feature (option)
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Description of Modes

The mirroring system of this machine consists of 4 modes.
The modes in parentheses show the mirroring system statuses.
The status flows among the modes below during operation.
The table below lists descriptions of modes and operational overview.
Name of Mode Description
Mirror Mode Both HDDs are normally
operated
Degrade Mode Any trouble occurred in
the backup HDD suspends
mirroring operation. The
machine can be used under this
condition, however, the backup
HDD should be replaced at the
earliest convenience.
Rebuild mode The data of the master HDD is
copied (rebuilt) to the backup
HDD. The machine can be
used under this condition.
Halt mode Both HDDs are in trouble (see
*1)
*1: Turn OFF/ ON the power in this mode, the mode returns to the previous mode.
2 Technology > Main Controller > Controls > HDD mirroring feature (option)
Master HDD Status Backup HDD Status
In normal operation In normal operation
In normal operation With troubles (HDD not
installed/ HDD in trouble)
In normal operation In recovery from the
trouble (Copying data of
Master HDD)
In trouble (HDD not With troubles (HDD not
installed/ HDD installed installed/ HDD installed
not registered/ HDD not registered/ HDD
disconnected while the disconnected while the
mirroring board is in mirroring board is in
operation) operation)

Mode Flow at Start-up

Halt Mode Mirror Mode
Trouble
Both HDDs
In which HDD?
Halt Mode
T-2-14 T-2-14
Turn ON Main Power Switch
Flow to Mode at Previous Job Completion
Degrade Mode Rebuild Mode
See Overview of
Trouble
Trouble Recovery
Backup HDD
Either HDD
In which HDD?
Degrade Mode
Degrade Mode
Master HDD
See Overview of
See Overview of
Trouble Recovery
Trouble Recovery
Unable to detect
Unable to detect
Master HDD at Start-up
Master HDD at Start-up
Halt Mode Halt Mode Halt Mode
See Overview of Trouble Recovery
Mirror Mode
2-25
F-2-35 F-2-35
2-25