20140917 How to create a software RAID-1 array with mdadm on Linux.md

20140917 How to create a software RAID-1 array with mdadm on Linux.md translating
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shipsw 2015-02-05 16:34:17 +08:00
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How to create a software RAID-1 array with mdadm on Linux
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Redundant Array of Independent Disks (RAID) is a storage technology that combines multiple hard disks into a single logical unit to provide fault-tolerance and/or improve disk I/O performance. Depending on how data is stored in an array of disks (e.g., with striping, mirroring, parity, or any combination thereof), different RAID levels are defined (e.g., RAID-0, RAID-1, RAID-5, etc). RAID can be implemented either in software or with a hardware RAID card. On modern Linux, basic software RAID functionality is available by default.