Removable Raid Controller Vs. Built in Motherboard Raid Controller

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    Background

    • RAID uses more than one hard disk drive to provide either fault tolerance or additional speed.

      Traditionally, implementing RAID required the use of a dedicated hardware card, but many modern computers and servers now have this ability built into the motherboard.

    Considerations

    • A RAID controller integrated into a motherboard is likely to support a limited range of RAID configurations, while a dedicated controller card usually has advanced features such as the ability to add "hot spare" drives in the RAID array, meaning a spare drive can automatically take over if a drive fails.

      A RAID array set up using a removable controller is also easier to move to another machine as the card can be moved complete with the drives.

    Alternative

    • Some operating systems have built-in features that allow you to set up basic RAID without the use of any hardware.

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