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b. RAID 5 Disk Volume
Three or more hard disks can be integrated to form RAID 5 disk volume.
Data will be distributed and stored among the disks. If a disk fails, you can
replace a new disk with the damaged one, and the system will restore the
data to the new disk. You can also use three disks for RAID 5 and a fourth
disk as a backup disk. If a disk of RAID 5 volume is damaged, the spare disk
can replace that damaged disk, which enhances server stability and
efficiency.
Note: When configuring RAID 5 disk volume, at least 3 disks are
required.
c. RAID 1 Mirroring Disk Volume
Mirroring Disk protects your data by automatically backing up the contents of
one disk onto the second disk of a mirrored pair. This protects your data if
one of the disks fails. However, the storing capacity is equal to a single disk,
as the second disk is used to automatically back up the first one.
d. RAID 0 Striping Disk Volume
Striping disk combines two or more disks into one larger disk. It offers the
fastest disk access but does not have any protection of your data if the
striped array fails. The disk capacity equals the number of disks in the array
times the size of the smallest disk.