Description of Modes

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Description of Modes
The mirroring system of this machine consists of 4 modes. The status flows among the modes below during operation.
The modes in parentheses show the mirroring system statuses.

Name of Mode | Description | Master HDD Status | Backup HDD Status
Mirror Mode | Both HDDs are normally operated | In normal operation | In normal operation
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. | In normal operation | With troubles (HDD not installed/ HDD in trouble)
Rebuild mode | The data of the master HDD is copied (rebuilt) to the backup HDD. The machine can be used under this condition. | In normal operation | In recovery from the trouble (Copying data of Master HDD)
Halt mode | Both HDDs are in trouble * | In trouble (HDD not installed/ HDD installed not registered/ HDD disconnected while the Mirroring PCB is in operation) | With troubles (HDD not installed/ HDD installed not registered/ HDD disconnected while the Mirroring PCB is in operation)

* Turn OFF/ ON the power in this mode, the mode returns to the previous mode.
Mode Flow at Start-up
Mode Flow during Operation