Digiever DS-1105 Pro+, User Manual

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The introduction of disk configuration is in the below table.
Disk Configuration
Big Drive
(Linear)
Big Drive is a collection of hard disk drives and does not provide
any RAID protection. The data are written to the disks
continuously.
Performance
(RAID 0)
RAID0 is one larger volume with 2 or more hard disk drives. The
data are written to the hard disk drives without any parity
information. The total storage capacity is the sum of all hard disk
drives.
Fault
Tolerant
(RAID 1)
2 hard disk drives are required to create a RAID1 array. RAID1 can
provide disk mirroring by duplicating the data between two hard
disk drives.
Fault
Tolerant
(RAID 5)
A minimum of 3 hard disk drives are required to create RAID5. The
data are striped in all hard drives in a RAID5 array and the parity
information is stored in each drive. If a hard disk drive fails, the
array enters degraded mode. The data can be rebuilt from other
member drives after installing a new drive to replace the failed
one.
Fault
Tolerant
(RAID 6)
To have the best performance, a minimum of 6 hard disk drives
are required to create RAID6. The data are striped in all hard
drives in a RAID6 array and the parity information is stored in each
drive. It tolerates failure of two hard drives. The data can be
rebuilt from other member drives after installing a new drive to
replace the failed one.
Fault
Tolerant
(Raid10)
Data are written in stripes across primary disks that have been
mirrored to the secondary disks. A typical RAID 10 configuration
consists of four drives, two for striping and two for mirroring
RAID 10 is supported in DS-16X00-RM Pro+, DS-8X00-RM Pro(+),DS-8X00-RMP Pro(+),
DS-4X00-RM Pro(+),DS-4X00-RMP Pro(+),DS-4X00 Pro(+) Series.
RAID6 is supported in DS-16X00-RM Pro+, DS-8X00-RM Pro(+), DS-4X00-RM Pro(+),
DS-4X00 Pro(+) series.