Promise Technology Smartstor NS4600 User Manual Page 307

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Chapter 6: Technology Background
Introduction to RAID (below)
Choosing a RAID Level (page 300)
Spare Drive (page 301)
Automatic Rebuilding (page 302)
Partition and Format (page 302)
RAID Volume Migration (page 303)
Introduction to RAID
RAID (Redundant Array of Independent Disks) allows multiple disk drives to be
combined together into a RAID Volume. You create a RAID Volume on your
SmartStor when you perform the setup procedure, either in SmartNAVI or the
PASM Setup Wizard.
The benefits of a RAID can include:
Higher data transfer rates for increased server performance
Increased overall storage capacity for a single Volume
Data redundancy/fault tolerance for ensuring continuous system operation in
the event of a disk drive failure
Different RAID levels use different organizational models and have varying
benefits. Also see “Choosing a RAID Level” on page 300. The following outline
breaks down the properties for each RAID level supported on the SmartStor:
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