There are a few possible reasons why a disk in Sangfor WANO might be self-checking:

    Scheduled disk check: Sangfor WANO has a built-in disk checking feature that can be scheduled to run periodically. This feature can be used to detect and repair potential disk problems before they cause service outages.
    Disk error: If Sangfor WANO detects an error on a disk, it will automatically initiate a disk check to attempt to repair the error.
    Power outage: If Sangfor WANO experiences a power outage, it will automatically initiate a disk check on all disks when the system comes back online. This is done to ensure that the disks are not corrupted as a result of the power outage.
    Hardware failure: If Sangfor WANO detects a hardware failure on a disk, it will automatically initiate a disk check to attempt to repair the failure. If the disk check is unsuccessful, the disk will need to be replaced.

To determine the reason why a disk is self-checking in Sangfor WANO, you can check the system logs. The logs will contain information about the event that triggered the disk check, as well as the results of the disk check.

There are a few possible reasons why a disk in Sangfor WANO might be self-checking:

    Scheduled disk check: Sangfor WANO has a built-in disk checking feature that can be scheduled to run periodically. This feature can be used to detect and repair potential disk problems before they cause service outages.
    Disk error: If Sangfor WANO detects an error on a disk, it will automatically initiate a disk check to attempt to repair the error.
    Power outage: If Sangfor WANO experiences a power outage, it will automatically initiate a disk check on all disks when the system comes back online. This is done to ensure that the disks are not corrupted as a result of the power outage.
    Hardware failure: If Sangfor WANO detects a hardware failure on a disk, it will automatically initiate a disk check to attempt to repair the failure. If the disk check is unsuccessful, the disk will need to be replaced.

To determine the reason why a disk is self-checking in Sangfor WANO, you can check the system logs. The logs will contain information about the event that triggered the disk check, as well as the results of the disk check.