NVR user manual - Kamery IP

Single Disk VolumeEach hard disk drive is used as astandalone disk. If a disk is damaged,all the data will be lost.JBOD (Just a bunch of disks)JBOD is a collection of hard disk drivesthat does not offer any RAID protection.The data are written to the physicaldisks sequentially. The total storagecapacity equals to the sum of thecapacity of all the member drives.RAID 0 Striping Disk VolumeRAID 0 (striping disk) combines 2 ormore hard disk drives into one largervolume. The data is written to the harddisk drives without any parityinformation and no redundancy isoffered. The disk capacity equals thenumber of hard disk drives in the arraytimes the size of the smallest hard drive.RAID 1 Mirroring Disk VolumeRAID 1 duplicates the data between twohard disk drives to provide diskmirroring. To create a RAID 1 array, aminimum of 2 hard drives are required.RAID 5 Disk VolumeThe data are striped across all thedrives in a RAID 5 array. The parityinformation is distributed and storedacross each drive. If a member drivefails, the array enters degraded mode.After installing a new drive to replacethe failed one, the data can be rebuiltfrom other member drives that containthe parity information.126