Canon imageRUNNER ADVANCE 6075 Series Service Manual page 80

2
Technology > Main Controller > Controls > HDD mirroring feature (option)
● HDD reading/writing operation
At reading:
Data is read by HDD1 (master HDD)
only
Main controller PCB 2
Mirroring PCB
HDD HDD
1 2
The ACT LED (green) on the LED PCB is lighted up/blinking if reading/writing to each HDD
is performed properly.
In the case of failure:
• The LED (red) on the LED PCB is blinking. If only one HDD is faulty, the operation is
continued by the other HDD.
• If both two HDDs are faulty, E602 error is shown on the control panel to stop the
operation.
List of operation status (LED)
---: Light-out A: lighting-up B: blinking
Status
Green LED Red LED Green LED Red LED
At normal operation
During access with HDD1
During access with HDD2
HDD1 is faulty
HDD2 is faulty
During data copy to HDD1 (rebuild)
During data copy to HDD1 (rebuild)
2 Technology > Main Controller > Controls > HDD mirroring feature (option)
At writing:
The same data is written to each HDD at
the same timing
Main controller PCB 2
Mirroring PCB
HDD HDD
1 2
HDD 1 (Ch A) HDD 2 (Ch B)
--- --- --- ---
A --- --- ---
--- --- A ---
--- A --- ---
--- --- --- A
---/A B ---/A ---
---/A --- ---/A B
T-2-13
● 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
F-2-35 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.
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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)
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T-2-14