Acer Altos G320 Series - Manual (Page 110)

Appendix B: SATA RAID configuration 100
Assigning RAID levels
Only one RAID level can be assigned to each array. The table below
displays the drives required per RAID level.
The factors you need to consider when selecting a RAID level are listed
in the table below:
RAID Level
Minimum number of
physical drives Maximum number of
physical drives
0 One Four
1 Two Two
10 Four Four
Level
Description
and use
Pros Cons
No. of
Drives Fault
Tolerant
0 Data divided
in blocks and
distributed
sequentially
(pure striping).
Note: Use for
non-critical
data that
requires high
performance.
High data
throughput
for large
files • No fault
tolerance.
• Data is lost if
a drive fails.
One to
four No
1 Data
duplicated on
another disk
(mirroring).
Note: Use for
read-intensive,
fault-tolerant
systems.
100 percent
data
redundancy,
providing
fault
tolerance. • More disk
space
required.
• Reduces
usable disk
space to the
size of the
smallest
drive.
• Reduced
performance
during
rebuilds.
Two Yes
AA G320_UG_EN.book Page 100 Tuesday, August 30, 2005 2:34 PM