Promise Technology FASTTRAK SX4300, User Manual, Page: 50 / 70

FastTrak SX4300, SX8300 User Manual
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• Imaging applications
• Database servers
• General fileserver
RAID 50
Recommended Applications for RAID 50
• File and Application servers
• Transaction processing
• Office application with many users accessing small files
JBOD
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.
Advantages Disadvantages
High Read data transaction rate
Medium Write data transaction rate
Good aggregate transfer rate
High reliability
Supports large volume sizes
Higher disk overhead than RAID 5
Advantages Disadvantages
Enables you to manage a large number
of disk drives from a single controller
The failure of one drive has no effect
upon the data in other disk drives
An alternative to RAID without any
RAID advantages
Should not be used in mission critical
environments