User manual

99
JBOD (Just a bunch of disks)
JBOD is a collection of hard drives that
does not offer any RAID protection.
The data are written to the physical
disks sequentially. The total storage
capacity is equal to the sum of the
capacity of all member hard drives.
RAID 0 Striping Disk Volum e
RAID 0 (striping disk) combines 2 or
more hard drives into one larger
volume. The data is written to the
hard drive without any parity
information and no redundancy is
offered.
The total storage capacity of a RAID 0
disk volume is equal to the sum of the
capacity of all member hard drives.
RAID 1 Mirroring Disk Volum e
RAID 1 duplicates the data between
two hard drives to provide disk
mirroring. To create a RAID 1 array, a
minimum of 2 hard drives are required.
The storage capacity of a RAID 1 disk
volume is equal to the size of the
smallest hard drive.
RAID 5 Disk Volum e
The data are striped across all the
hard drives in a RAID 5 array. The
parity information is distributed and
stored across each hard drive. If a
member hard drive fails, the array
enters degraded mode. After installing
a new hard drive to replace the failed
one, the data can be rebuilt from other
member drives that contain the parity