Promise Technology FastTrak TX2300 User Manual download pdf (Page 100)

FastTrak TX2200, TX2300 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.

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

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Promise Technology FastTrak TX2300 User Manual Page 100