RAID 专题文章 struggling 全部认领

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Introduction to RAID, Concepts of RAID and RAID Levels Part 1
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RAID is a Redundant Array of Inexpensive disks, but nowadays it is called Redundant Array of Independent drives. Earlier it is used to be very costly to buy even a smaller size of disk, but nowadays we can buy a large size of disk with the same amount like before. Raid is just a collection of disks in a pool to become a logical volume.

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Creating Software RAID0 (Stripe) on Two Devices Using mdadm Tool in Linux Part 2
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RAID is Redundant Array of Inexpensive disks, used for high availability and reliability in large scale environments, where data need to be protected than normal use. Raid is just a collection of disks in a pool to become a logical volume and contains an array. A combine drivers makes an array or called as set of (group).

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Setting up RAID 1 (Mirroring) using Two Disks in Linux Part 3
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RAID Mirroring means an exact clone (or mirror) of the same data writing to two drives. A minimum two number of disks are more required in an array to create RAID1 and its useful only, when read performance or reliability is more precise than the data storage capacity.

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Creating RAID 5 (Striping with Distributed Parity) in Linux Part 4
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In RAID 5, data strips across multiple drives with distributed parity. The striping with distributed parity means it will split the parity information and stripe data over the multiple disks, which will have good data redundancy.

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Setup RAID Level 6 (Striping with Double Distributed Parity) in Linux Part 5
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RAID 6 is upgraded version of RAID 5, where it has two distributed parity which provides fault tolerance even after two drives fails. Mission critical system still operational incase of two concurrent disks failures. Its alike RAID 5, but provides more robust, because it uses one more disk for parity.

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Setting Up RAID 10 or 1+0 (Nested) in Linux Part 6
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RAID 10 is a combine of RAID 0 and RAID 1 to form a RAID 10. To setup Raid 10, we need at least 4 number of disks. In our earlier articles, weve seen how to setup a RAID 0 and RAID 1 with minimum 2 number of disks.

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Growing an Existing RAID Array and Removing Failed Disks in Raid Part 7
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Every newbies will get confuse of the word array. Array is just a collection of disks. In other words, we can call array as a set or group. Just like a set of eggs containing 6 numbers. Likewise RAID Array contains number of disks, it may be 2, 4, 6, 8, 12, 16 etc. Hope now you know what Array is.