System information

Using the RAID GUI
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2.8 Hardware Configurations
2.8.1 Hard disks
In this section, you can configure the following settings to all hard disks.
Note
Hard disks with configurations that conflict with controller configurations are not imported and enter
conflict state.
On-line Array Roaming Control: On / Off (default)
On: The controller will try to keep the disk in the foreign state if hard disk contains valid meta-data. However, if the
disk fails to import successfully, it will enter the conflict state.
Off: All on-line installed disks are perceived as new disks and enter unused state. Meta-data on the disk is cleared
and reset.
Write Log Control: On (default) / Off
The consistency of parity and data might not be retained because of improper shutdown of the controller. This
option enables or disables write logging for parity consistency recovery.
Note
1. Enabling write logging will cause slight performance degradation.
2. Write logging is only effective to logical disks with parity-based RAID levels.
3. To guarantee the consistency of data and parity by write logging, the on-disk cache must be
turned off.
Meta-data Update Frequency: Low (default) / Medium / High
This option specifies the frequency to update the progress of background tasks, except reconfiguration tasks.
Task Notify: On / Off (default)
Select this option to enable or disable the event notification when the background task is completed to a specified
percentage. The range is from 1% to 99%.
Utilities Task Priority: Low (default) / Medium / High
This option determines the priority of the background tasks for utilities of all hard disks not belonging to any disk
group, such as scrubbing and cloning.
SMART Warning: On / Off (default)
This option is only for SMART function supported hard disks. The SMART function serves as a device status
monitor.
Period of SMART Polling (minute): 60 (default)
This option is only available when the SMART warning is turned on. Specify the period in minutes to poll the
SMART status from hard disks periodically.
SMART Action: Alert (default) / Clone
This option is only available when the SMART warning is turned on. The controller will alert you or start disk
cloning when a disk reports a SMART warning.
Disk IO: timeout after 30 (default) sec(s) and retry 1 (default) time(s)
Timeout value (in unit of seconds): If a hard disk does not respond to a command within this time, the controller
will reset and reinitialize the hard disk, and retry the command. The possible values are 1 to 60.
Retry times: Specify the number of retries when a disk IO command fails. The possible values are 0 to 8.
Transfer Speed: Auto (default) / 1.5GB / 3GB