Troubleshooting Raid Operation Errors - Fujitsu Q802 Operating Manual

Troubleshooting RAID operation errors

If the RAID configuration for the NAS is incorrect or error messages are displayed, please try the
following solutions:
It is essential to back up all important data on the NAS first to mitigate any potential data
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loss.
Check the following to determine if the RAID rebuild has failed:
– LED: The Status LED on the NAS is flashing red.
– The Control Panel - System Settings - Storage Manager page is displaying the hard disk
configuration status as In degraded mode.
► Establish which hard disk(s) caused the RAID rebuild failure:
– Go to the Control Panel - System Settings - System Logs page and search for the following
error messages in order to establish which hard disk(s) caused the error.
Error occurred while accessing Drive X
Drive X has been removed
X refers to the number of the hard disk port.
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Fault elimination
The drive rebuild will start when a new hard disk (e.g. HDD 1) is connected. If the drive configuration
fails again due to a read/write error from the hard disk during the rebuild process, then please check
which hard disk caused the error and then follow the steps below to rectify the problem.
Scenario 1: The error was caused by the last drive to be connected.
If the last drive to be connected (e.g. HDD 1) caused the rebuild error, then please disconnect HDD 1
and connect another new drive to start RAID rebuilding.
Scenario 2: The error was caused by an existing drive (e.g. HDD 2) in the RAID configuration.
If the RAID configuration is RAID 1, then carry out one of the following steps:
► Back up the data on the drive to another storage device. Once this is done, repeat the
installation and setup of the NAS.
► Format the last drive to be connected (e.g. HDD 1) as a single drive. Next, back up the data on
the NAS to this drive (HDD 1) using Web File Manager. Remove the faulty drive (e.g. HDD 2).
Install a new drive in the NAS to replace the faulty drive. Finally, run the RAID 1 migration.
When connecting or removing a hard disk, please adhere strictly to the following rules to
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avoid causing a system operation fault or loss of data.
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Troubleshooting RAID operation errors
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