Promise Technology FASTTRAK SX4300, SX8300 Other Logical Drive Features, Stripe Block Size

FastTrak SX4300, SX8300 User Manual

• Imaging applications

• Database servers

• General fileserver

RAID 50

Advantages	Disadvantages
High Read data transaction rate	Higher disk overhead than RAID 5
Medium Write data transaction rate
Good aggregate transfer rate
High reliability
Supports large volume sizes

Recommended Applications for RAID 50

•File and Application servers

•Transaction processing

•Office application with many users accessing small files

JBOD

Advantages	Disadvantages
Enables you to manage a large number	An alternative to RAID without any
of disk drives from a single controller	RAID advantages
The failure of one drive has no effect	Should not be used in mission critical
upon the data in other disk drives	environments

Recommended Applications for JBOD

•Any application requiring multiple disk drives but where read/write speed or fault-tolerance are not important

•Applications were low-cost operation critical

Other Logical Drive Features

Stripe Block Size

The choices are 32K, 64K and 128K. 64K is the default. This selection will directly affect performance. There are two issues to consider when selecting the stripe block size.

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