Raid - EverFocus PARAGON960 X4 User Manual

6.5.3

RAID

The RAID function (Redundant Arrays of Independent Disks) can enable two hard disks to act
as one, allowing users to achieve data redundancy (RAID 1) or greater effective disk speed
(RAID 0).
Note: It is recommended to use two hard disks (HDDs) with the same capacity. Otherwise,
the smaller size will be the amount of disk space used on both drives. For example, if HDD1
is 200 GB and HDD2 is 500 GB, and RAID 0 is selected, the total amount of disk space
recognized by the DVR will be 400 GB (200 GB + 200 GB).
RAID Type:
Off: No RAID.
RAID 0: RAID 0 is designed to improve disk speed. Data is written to two disks alternatively,
instead of just one, which improves the overall system speed. Note that if the two HDDs are
with different capacity, the smaller size will be the amount of disk space used on both drives.
RAID 1: RAID 1 is designed for disk redundancy. The same data is written to two disks. When
one hard disk fails, the other hard disk contains all the data. Note that if the two HDDs are
with different capacity, the smaller size will be the amount of disk space used on both drives.
RAID State: Shows the RAID and disk state. (No RAID, Broken, Degrade, Rebuilding, Normal,
EzBackup, Unknown, or System Error, No RAID Now. If connecting to more than one disk, it
will show Disk1, Disk2 ...DiskX is ok.)
Figure 6-19
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PARAGON960 X4