RAID LEVEL MIGRATION METHOD FOR PERFORMING ONLINE RAID LEVEL MIGRATION AND ADDING DISK TO DESTINATION RAID, AND ASSOCIATED SYSTEM
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United States of America Patent
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N/A
Issued Date -
Jul 2, 2009
app pub date -
Aug 7, 2008
filing date -
Dec 31, 2007
priority date (Note) -
Abandoned
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Abstract
A Redundant Array of Independent Disks (RAID) level migration method for performing an online RAID level migration and adding a disk to a destination RAID is provided. First, the required information for migration is specified, and then a degraded mode is used to establish the destination RAID, and file system is built on the destination RAID. The file system of the source disk device is configured to be read-only, and all data of the source disk device are duplicated to the destination RAID. After completing file duplication, the destination RAID replaces the source disk device. The operation of the source disk device is stopped and the source disk device is added to the destination RAID. As a result, the RAID migration is accomplished. In addition, an associated RAID level migration system is further provided.
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