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Patrol Read
The Patrol Read is a read & verify test in the entire area of HDDs. It can be performed for all the HDDs assigned to
virtual disks and the hot-spares.
The Patrol Read allows subsequent defects of HDDs to be detected and repaired.
For HDDs configuring redundant virtual disks or those assigned to hot-spares, the error sectors detected during Patrol
Read can be repaired.
IMPORTANT:
Note the following for the patrol read:
„ For the Internal RAID Controller, the Patrol Read feature is factory-set to "Enabled".
For the external SAS HDD Disk Array Controller, the Patrol Read feature is either
enabled or disabled depending on the firmware.
„
To change the Patrol Read settings, use the Universal RAID Utility.
„ If the system is restarted while running Patrol Read, Patrol Read resumes from the point
where it was stopped.
Consistency Check
The Consistency Check is used to check the consistency among the virtual drives. It is available for the redundant
virtual drives except for RAID0. It is also available for hot spare.
The Consistency Check can be performed through WebBIOS or the Universal RAID Utility.
The Consistency Check performs a consistency check but can also repair the error sectors. Accordingly, it can be used
as preventive maintenance.
IMPORTANT:
Note the following for Consistency Check:
„ During Consistency Check, the processing rate is decreased due to the high load.
„ If the system is restarted, the Consistency Check is aborted and resumes after restart.
„
To schedule a Consistency Check execution, use WebBIOS, not the Universal RAID
Utility.