Accusys ExaRAID GUI - Manual (Page 96)

Using the RAID GUI
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Auto Array Roaming Control: On / Off (default)
On: Enable imported foreign hard disks when the controller is started.
Foreign hard disk configurations are also restored.
Off: Disable imported foreign hard disks when the controller is started.
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%.