4-44 Configuring Your ServerPatrol ReadThe patrol read gives the read & verify test in the entire area of HDDs. It can be performed for allHDDs 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 detectedduring Patrol Read can be repaired.IMPORTANT: Note the following for the patrol read: For the Onboard RAID Controller (MegaRAID ROMB), PatrolRead feature is factory-set to "Enabled". For N8103-90 Disk ArrayController (for external SAS HDD), Patrol Read feature is eitherenabled or disabled depending on firmware. To change settings of Patrol Read, use Universal RAID Utility. If the system is restarted while running Patrol Read, Patrol Readresumes from that point.Consistency CheckThe Consistency Check is used to check consistency among virtual drives. It is available forredundant 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 Consistency Check: During Consistency Check, the processing rate is decreased due tomuch load. If the system is restarted, the Consistency Check is aborted.However, the Consistency Check resumes after restart. To schedule execution of Consistency Check, use WebBIOS, not theUniversal RAID Utility
