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SmartStor NS4600 Product Manual - Promise Technology, Inc.

SmartStor NS4600 Product Manual - Promise Technology, Inc.

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Chapter 8: <strong>Technology</strong> Background<br />

• Introduction to RAID (below)<br />

• Choosing a RAID Level (page 176)<br />

• Spare Drive (page 177)<br />

• Automatic Rebuilding (page 178)<br />

• Partition and Format (page 178)<br />

• RAID Volume Migration (page 179)<br />

Introduction to RAID<br />

RAID (Redundant Array of Independent Disks) allows multiple disk drives to be<br />

combined together into a RAID Volume. You create a RAID Volume on your<br />

<strong>SmartStor</strong> when you perform the setup procedure, either in SmartNAVI or the<br />

PASM Setup Wizard.<br />

The benefits of a RAID can include:<br />

• Higher data transfer rates for increased server performance<br />

• <strong>Inc</strong>reased overall storage capacity for a single Volume<br />

• Data redundancy/fault tolerance for ensuring continuous system operation in<br />

the event of a disk drive failure<br />

Different RAID levels use different organizational models and have varying<br />

benefits. Also see “Choosing a RAID Level” on page 176. The following outline<br />

breaks down the properties for each RAID level supported on the <strong>SmartStor</strong>:<br />

171

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