Dulce Systems PRO Mini - Manual (Page 38)

PRO MINI Installation and User’s Manual
9. RAID Level Descriptions
Although the RAID Controller supports a large variety of RAID Levels, RAID 5 is
the most commonly used for video and content creation purposes.
RAID
Level
Description Advantage Disadvantage Ideal for
0 Striping.
Highest
performance.
No disk
redundancy, one
drive failure will
lose all data.
Highest performance;
but, appropriate only
for short-term data
projects. Not
appropriate for video
data archiving.
1 Mirroring.
Highest
redundancy.
Less cost efficient
for redundancy,
loses ½ disk
capacity.
Data protection for
RAIDs with consisting
of only 2 disk drives.
3
Striping with
a dedicated
parity drive.
Efficient drive
redundancy, 1
drive used for
parity.
Loses 1 disk drive
capacity.
Well balanced for
video requiring
performance and
redundancy.
5
Striping the
parity across
all drives.
Efficient drive
redundancy,
parity
distributed to all
drives.
Loses 1 disk drive
capacity.
Well balanced for file
video requiring
performance and
redundancy.
6
Striping with
two
dedicated
parity drives.
Double drive
redundancy, 2
drives used for
parity.
Loses 2 disk drive
capacity.
Mission critical.
JBOD
Just a Bunch
of disks.
Each drive can
be accessed
individually from
operating
system.
No redundancy. Audio applications.
RAID
+
Spare
A drive is set
aside as an
online hot
spare.
Automatic
rebuild of a
failed drive.
Loses another
drive capacity. (In
addition to the
drive(s) needed
for the RAID level
selected.)
Not appropriate for
removable Disk Drive
Pack products.
RAID Level 6 is
recommended.
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