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