ND400_Basic.book 52 ページ ２００８年４月８日 火曜日 午後３時５９分
Using the Front Panel for Operations
HDD Error Recovery (During RAID Operation)
When errors occur during RAID5 or RAID6 operation, the HDD errors in the following table are displayed.
When one HDD has errors ([1down]) in RAID5 mode, the data on the remaining HDDs can be read and recovery is possible. When two HDDs have errors ([2down]) in RAID6 mode, the data on the remaining HDDs can be read and recovery is possible. When any errors occur on an HDD, replace the effected HDD as soon as possible.
For details refer to the operating instructions for the extension unit. *Contact your dealer for information on replacing HDDs.
Important:
•RAID5 mode
Data cannot be recovered when two or more HDDs have errors ([2 down]) or when an HDD has errors during recovery.
•RAID6 mode
Data cannot be recovered when three or more HDDs have errors ([3 down]) or when an HDD has errors during recovery.
| Data source |
| During HDD error (malfunction) |
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| During recovery | ||
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Recorder/ |
| LCD | • | RAID 1 DOWN: |
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Extension |
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| [1down] |
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unit |
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| • | RAID 2 DOWN: |
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| [2down] |
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| • Only extension units are shown. | |
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| • RAID 3 DOWN (only while in RAID6 |
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| mode): |
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| [3down] |
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| HDD access indicator | Lights red: |
| Alternating orange/red | |||
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| Errors have occurred on HDD |
| HDD being recovered in RAID5/RAID6 | |||
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| (Data can be recovered by replacing the |
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| HDD) |
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| • When in RAID5 mode, the first HDD has |
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| errors |
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| • When using RAID6, the first two HDDs |
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| have errors |
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| Blinks red: |
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| Errors have occurred on HDD |
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| (Data cannot be recovered even if HDD is |
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| replaced) |
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| • When in RAID5 mode, the second HDD |
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| has errors |
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| • When in RAID6 mode, the third HDD |
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| has errors |
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Recorder |
| [Error Log] | • | RAID 1 DOWN | RAID recovery failure | |||
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| Refer to the Operating |
| Recorder: MAIN RAIDm 1 DOWN | • | Recorder | ||
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| Instructions (PDF file) for |
| Extension unit: EXTu RAIDm 1 DOWN |
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| MAIN RAIDm RECOVERY FAILURE | |
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| more information. | • | RAID 2 DOWN | • | Extension unit | ||
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| Recorder: MAIN RAIDm 2 DOWN |
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| EXTu RAIDm RECOVERY FAILURE | |
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| Extension unit: EXTu RAIDm 2 DOWN |
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| • | RAID 3 DOWN | m: Operational mode | |||
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| Recorder: MAIN RAID6 3 DOWN | u: Unit number | |||
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| Extension unit: EXTu RAID6 3 DOWN |
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| m: Operational mode |
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| u: Unit number |
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