Assigning Raid Levels - Acer Altos G320 Series User Manual

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Assigning RAID levels

Only one RAID level can be assigned to each array. The table below
displays the drives required per RAID level.
RAID Level
0
1
10
The factors you need to consider when selecting a RAID level are listed
in the table below:
Description
Level
and use
0 Data divided
in blocks and
distributed
sequentially
(pure striping).
Note: Use for
non-critical
data that
requires high
performance.
1 Data
duplicated on
another disk
(mirroring).
Note: Use for
read-intensive,
fault-tolerant
systems.
Minimum number of
physical drives
One
Two
Four
Pros
High data
throughput
for large
files
100 percent
data
redundancy,
providing
fault
tolerance.
Appendix B: SATA RAID configuration
Maximum number of
physical drives
Four
Two
Four
No. of
Cons
Drives
• No fault One to
tolerance. four
• Data is lost if
a drive fails.
• More disk Two
space
required.
• Reduces
usable disk
space to the
size of the
smallest
drive.
• Reduced
performance
during
rebuilds.
Fault
Tolerant
No
Yes