19Using the Front Panel for OperationsThe operational mode display shows the operational mode, theoperation status in RAID mode, and the internal temperature(reference value).Refer to the network disk recorder's Setup Instructions (PDF file) forinformation about HDD initialization and disk configuration.(Temperature will be displayed in Fahrenheit for NTSC model, e.g."90 ºF")NormalHDD Errors• RAID5When HDD errors occur, [1DOWN] or [2DOWN] flash on theLCD.Also, the HDD access indicator of HDD with errors lights or blinksred. (page 29)• RAID6When an HDD errors occur, [1DOWN], [2DOWN], or [3DOWN]appears in the LCD.Also, the HDD access indicator of HDD with errors lights or blinksred. (page 29)Display during recovery• RAID5The following is displayed during recovery in RAID5 mode.Waiting to start recoveryDuring recovery (writing)During recovery, the HDD access indicator blinks orange andred. (page 29)• RAID6The display when in RAID6 mode is the same as in RAID5 mode.About the Operational ModeDisplayDisplay During Single OperationDisplay During RAID5/RAID6 OperationImportant:• In RAID5 mode, when one HDD has errors, data can be readfrom the remaining HDDs and recovery is possible.When one HDD has errors, replace it quickly and recover thedata.Data cannot be recovered when two or more HDDs has errorsor When an HDD has errors while data is being recovered.Important:• In RAID6 mode, when two HDDs have errors, data can be readfrom the remaining HDDs and recovery is possible.When [1DOWN] or [2DOWN] occurs, replace the HDDs witherrors quickly and recover the data.Data cannot be recovered when three or more HDDs haveerrors or when an HDD has errors while data is beingrecovered.