What is RAID and Types of RAID with benefits

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What is RAID (Redundant Array of Independent Disks) 

and Types of RAID with benefits



Raid is a data storage technology, which uses striping, mirroring, or parity to store data.Raid technology combines multiple physical disks into a single logical unit.

                                                            Disk Management Screenshot


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A spanned volume is a type of disk configuration that combines space from multiple physical drives into a single logical volume. Unlike RAID, it does not provide redundancy. Data is written sequentially across the drives, starting with one and moving to the next when full. It's useful for maximizing storage capacity but lacks fault tolerance—if one drive fails, all data is lost.

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Raids have many different levels for different purposes.

  • RAID 0: 

  • This Raid required at least 2 disks. Each disk is divided into smaller storage stripes

  • One disk is damaged, all the data will be lost. ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

RAID 1 

    1. It is disk mirroring /duplexing

    2. One disk is damaged, another disk will recover.

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  • RAID 5

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  • RAID 6
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  • RAID 1+0(RAID 10)

    1. Data 10 requires a minimum 4 disks.

    2. Lower layer is Raid 1 and the top layer is Raid 0.

    3. It is a combination of Performance Raid 0 and fault tolerance Raid 1.

    4. Note:If two disks fail, we still have backup data from two disks. Top layer is Raid 0 and bottom layer is Raid 1

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