TeraStation User Manual 127
RAID Scanning:
Click [Modify Settings]
to change settings.
RAID Scanning RAID Scanning is the feature to read check for all sectors in the data area of hard
drives which build RAID 1, 5 and 10.
An error possible to repaired* (bad sectors) which is found during check will be
automatically repaired.
Also an error possible to repaired* which is found during standard le operations will
be automatically repaired regardless of performing RAID Scanning or not.
Status Descriptions
Recoverable errors* • Read error in the data area which are build in RAID 1, 5, or
10 (including RAID 1 system area)
Unrecoverable errors • Write Error
• RAID management area error
• Drive partition information area error
• Drive recognition failure, etc.
If many errors possible to repair *(bad cluster) are found in one of the hard drives
which build RAID, that drive will be removed and the system will automatically move
to degrade mode.
Data are not protected in the degrade mode, it is strongly recommended to
immediately replace the erroneous hard drive.
When running RAID Scanning in the rst time, it is strongly recommended to backup
data on the TeraStation in advance.
[RAID Scanning]:
Set whether using RAID Scanning or not.
[RAID Scanning Schedule]:
Select the schedule to perform RAID Scanning.
• [Every Week], and from [Sunday] to [Saturday]
• [1st], and from [Sunday] to [Saturday]
• [2nd], and from [Sunday] to [Saturday]
• [3rd], and from [Sunday] to [Saturday]
• [4th], and from [Sunday] to [Saturday]
• [1st, 3rd], and from [Sunday] to [Saturday]
• [2nd, 4th], and from [Sunday] to [Saturday]
• [Every 1st day/month]
Select [Begin Immediate RAID Scan] and click [Save] to immediately run the
maintenance.
[RAID Scanning Start Time]:
Select time to start RAID Scanning from 0 to 23 o’clock.
* To stop RAID Scanning, click [Abort RAID Scanning].
[RAID Array Error Detection Response]:
When there is an error on RAID Array, the system will be shut down automatically
to protect data (This feature is only for RAID 1, 5 or 10. This does not work while in
normal mode or RAID 0). The default setting is [Shutdown].
[RAID Array check speed]:
Select the speed of the RAID Scanning from the following
• [High]: 10 hours per 1 TB RAID Array
• [Normal]: 20 hours per 1 TB RAID Array
• [Low]: 100 hours per 1 TB RAID Array