Meridian Data 1 ユーザーズマニュアル
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Chapter 5: Technology Background
This chapter covers the following topics:
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Introduction to RAID (below)
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Choosing a RAID Level
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Choosing a Stripe Size
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Choosing a Sector Size
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Cache Policy
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LUN Affinity
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Capacity Coercion
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Initialization
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Hot Spare Drives
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Partition and Format the Logical Drive
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RAID Level Migration
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Media Patrol
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Predictive Data Migration
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Transition
Introduction to RAID
RAID (Redundant Array of Independent Disks) allows multiple hard drives to be combined together in a disk
array. Then all or a portion of the disk array is formed into a logical drive. The operating system sees the logical
drive as a single storage device, and treats it as such. The RAID software and/or controller handle all of the
individual drives on its own. The benefits of a RAID can include:
array. Then all or a portion of the disk array is formed into a logical drive. The operating system sees the logical
drive as a single storage device, and treats it as such. The RAID software and/or controller handle all of the
individual drives on its own. The benefits of a RAID can include:
•
Higher data transfer rates for increased server performance
•
Increased overall storage capacity for a single drive designation (such as, C, D, E, etc.)
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Data redundancy/fault tolerance for ensuring continuous system operation in the event of a hard drive failure
Different types of disk arrays use different organizational models and have varying benefits. The following outline
breaks down the properties for each type of RAID disk array:
breaks down the properties for each type of RAID disk array: