Overview of Trouble Recovery

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Overview of Trouble Recovery
When any trouble occurs in the mirroring system, take the action for recovery appropriate to each mode.
The HDD in trouble can be located by the red LED on the LED PCB.
In case the master HDD cannot be located, turn OFF/ ON the power to check whether the green LED is lit on the LED PCB. The firstly blinked green LED (Ch A/Ch B) in a high speed tells the Master HDD, which is accessed firstly. The green LED not lit on a channel tells the location of Backup HDD.

Mode | Status | Action for Recovery | HDD1 (Ch A) | HDD2 (Ch B)
Red LED | Red LED
Mirror Mode | Normal (at standby) | Under normal operation | OFF | OFF
Degrade Mode *1 | HDD1 in trouble | 1. Check the connection between HDD1 and Mirroring PCB or Main Controller PCB 2. 2. When the trouble is not recovered, replace the HDD1. | ON | OFF
HDD2 in trouble | 1. Check the connection between HDD2 and Mirroring PCB or Main Controller PCB 2. 2. When the trouble is not recovered, replace HDD2. | OFF | ON
Rebuild mode | Copying data to HDD1 (Rebuild) | Copying (under Rebuild) | * | OFF
Copying Data to HDD2 (Rebuild) | Copying (under Rebuild) | OFF | *
Halt mode | Both HDDs in trouble | 1. Check Master HDD and Backup HDD *2 2. When the trouble is not recovered, replace the two HDDs (format the replaced HDD and download the system software). | ON | ON

* Blinking at an interval of 0.5 seconds
*1 This mode shows the message, “Need to replace hard disks (contact your service engineer)”, on the control panel. In addition, “310006” is indicated in CODE field of Alarm Log in service mode (COPIER> DISPLAY> ALARM-2).
*2 Never install the HDD used in the other model. The used HDD holds the ID specific to the firstly-installed machine, thus this machine is unable to recognize it. If done, you need to reinstall the HDD recognized in this machine.