Dulce systems PRO DQ G2 Manuel d'installation et d'utilisation - Page 18
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PRO DQ
Installation and User's Manual
g2
PRO DQ
Installation and User's Manual
g2
8. RAID Level Descriptions
Although the RAID Controller supports a large variety of RAID Levels, RAID 0 or
RAID 3 are most commonly used for video and content creation purpose.
RAID
Description
Level
0
Striping.
1
Mirroring.
Striping with a
3
dedicated
parity drive.
Striping the
5
parity across
all drives.
Striping with
two
6
dedicated
parity drives.
Just a Bunch
JBOD
of disks.
A drive is set
RAID
aside as an
+
online hot
Spare
spare.
Page 35
Page 36
Advantage
Disadvantage
No disk
Highest
redundancy, one
performance.
drive failure will
lose all data.
Less cost efficient
Highest
for redundancy,
redundancy.
loses ½ disk
capacity.
Efficient drive
redundancy, 1
Loses 1 disk drive
drive used for
capacity.
parity.
Efficient drive
redundancy,
Loses 1 disk drive
parity distributed
capacity.
to all drives.
Double drive
redundancy, 2
Loses 2 disk drive
drives used for
capacity.
parity.
Each drive can
be accessed
No redundancy.
individually from
operating system.
Loses another
drive capacity. (In
Automatic rebuild
addition to the
of a failed drive.
drive(s) needed for
the RAID level
selected.)
Ideal for
Highest
resolution
HD, 2K, and
maximum
multiple
streams.
Data
protection is
paramount,
maximum
disk failure
protection.
Well
balanced for
video
requiring
performance
and
redundancy.
Well
balanced for
file server
requiring
performance
and
redundancy.
Mission
critical.
Audio
applications.
Minimizes
degraded
RAID level
exposure
time.