Promise Technology FASTTRAK SX4300 - Manual (Page 48)

FastTrak SX4300, SX8300 User Manual
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JBOD – Single Drive
An alternative to RAID, JBOD capacity is equal to the size of the disk drive itself.
JBOD appears in the User Interface as one individual drive.
There are no performance or fault-tolerance features. When one disk fails, all
data on that disk is lost. The other disks are unaffected.
Choosing a RAID Level
There are several issues to consider when choosing the RAID Level for your
FastTrak logical drive. The following discussion summarizes some advantages,
disadvantages and applications for each choice.
RAID 0
Recommended Applications for RAID 0
• Image Editing
• Pre-Press Applications
• Any application requiring high bandwidth
Advantages Disadvantages
Implements a striped disk logical drive,
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 logical drive being lost
Should not be used in mission critical
environments
Disk Drive