Troubleshooting RAID operation errors
Fujitsu
55
Troubleshooting RAID operation errors
If the RAID configuration for the NAS is incorrect or error messages are displayed, please try the
following solutions:
i
It is essential to back up all important data on the NAS first to mitigate any potential data
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
i
X
refers to the number of the hard disk port.
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.
i
When connecting or removing a hard disk, please adhere strictly to the following rules to
avoid causing a system operation fault or loss of data.
