PLANET NAS-7400 - Manual (Page 119)

PLANET NAS-7400 User Manual
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7.2 Choosing a RAID Level
There are several issues to consider when choosing the RAID level for your
Volume. The following discussion summarizes some advantages,
disadvantages and applications for each choice.
RAID 0
Advantages Disadvantages
Implements a striped disk RAID
Volume, the data is broken down into
blocks and each block is written to a
separate disk drive
I/O performance is greatly improved
by spreading the I/O load across many
channels and drives
No parity calculation overhead is
involved Not a true RAID because it is not
fault-tolerant
The failure of just one drive will
result in all data in an RAID
Volume being lost
Should not be used in mission
critical environments
Recommended applications for RAID 0:

Image Editing

Pre-Press Applications

Any application requiring high bandwidth
RAID 1
Advantages Disadvantages
Simplest RAID storage subsystem
design
Can increase read performance by
processing data requests in parallel
since the same data resides on two
different drives Very high disk overhead - uses
only 50% of total capacity
Recommended applications for RAID 1:

Accounting/Financial

Payroll