NEC Express 5800, User Manual, Page: 330 / 719

Hardware
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Patrol Read
The patrol read gives the read & verify test in the entire area of HDDs. It can be performed
for all HDDs assigned to virtual disks and 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, error sectors
detected during Patrol Read can be repaired.
Consustency Check
The Consistency Check is used to check consistency among virtual drives. It is available for
redundant virtual drives except for RAID0.
Consistency Check can be performed through WebBIOS or Universal RAID Utility.
Consistency Check performs not only consistency check but also repair of error sectors.
Accordingly, it can be used as preventive maintenance.
IMPORTANT:
Note the following for the patrol read:
● To change settings of Patrol Read, use Universal RAID Utility.
● If the system is restarted while running Patrol Read, Patrol Read
resumes from that point.
IMPORTANT:
Note the following for Consistency Check:
● During Consistency Check, the processing rate is decreased due to
heavy load.
● If the system is restarted, the Consistency Check is aborted.
However, the Consistency Check resumes after restart.
● For scheduled execution of Consistency Check, use WebBIOS.