Promise Technology FASTTRAK SX4300, SX8300 user manual Choosing a RAID Level, Jbod Single Drive

FastTrak SX4300, SX8300 User Manual

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.

Disk Drive

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

Advantages	Disadvantages
Implements a striped disk logical drive,	Not a true RAID because it is not fault-
the data is broken down into blocks and	tolerant
each block is written to a separate disk	The failure of just one drive will result in
drive	all data in an logical drive being lost
I/O performance is greatly improved by	Should not be used in mission critical
spreading the I/O load across many	environments
channels and drives
No parity calculation overhead is
involved

Recommended Applications for RAID 0

•Image Editing

•Pre-Press Applications

•Any application requiring high bandwidth

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