Panasonic WJ-ND400 - Page 232

Notes on handling HDD
Be aware of the following at HDD installation and recovery:
The network disk recorder, WJ-ND400, is described as ND400 and the extension unit, WJ-HDE400, as
HDE400.
<Notes for HDD installation>
If an HDD unit is added during the operation described below, the ND400 and HDE400 do not recognize the
HDD unit to be added.
• ProcessofHDDrecognition
• ProcessofHDDremoval
• ProcessoflogginginthecongurationusingtheWebbrowser
• ProcessofmeasurementusingtheWebbrowser
Solution
RemovetheunrecognizedHDDunitonce,andinstalltheHDDunitagainaftercompletionoftheoperation
describedabove.Wheninstalling2ormoreHDDunits,performHDDrecognitionunitbyunit.
<Notes for RAID5/RAID6 recovery>
NeverturnoffthepowerduringtheRAID5/RAID6 recovery.Failuretoobservethismayfailtoretrievethe
data.
The following cases obstruct the start of RAID5/RAID6 recovery.
• CasethatthefailedHDDunitisreplacedinthepower-offstateandthenthepowerofthisunitisturned
on
• Casethat2HDDunitsarereplacedandthenthepowerofthisunit is toggledonandoffduringthe
recovery of one HDD unit when 2 HDD units in the RAID6 fail
In this case, the recovery of one HDD unit will start, but the recovery of the other HDD unit will not start.
Solution
RemovetheHDDunittherecoveryofwhichwillnotstart,andinstalltheHDDunitagain.