Promise Technology Smartstor NS4600 User Manual Page 183

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Chapter 8: Technology Background
Introduction to RAID (below)
Choosing a RAID Level (page 176)
Spare Drive (page 177)
Automatic Rebuilding (page 178)
Partition and Format (page 178)
RAID Volume Migration (page 179)
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 176. The following outline
breaks down the properties for each RAID level supported on the SmartStor:
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