RAID Controller

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A RAID controller, as its name implies, is used to control a RAID array. It is either a software program or a hardware device that is used to manage hard disk drives (HDDs) or solid-state drives (SSDs) in a computer or storage so that they work as a logical unit. A RAID controller works in order to help the device to act on RAID recovery.


Similar to RAID arrays, RAID controllers too are designed entirely for a type of RAID data recovery system. Hardware of the RAID controller has to be developed for distinct hard disks in your system. Hence, a RAID controller designed for IDE-based hard disks can’t be used for an SCSI hard disk.


Similarly, a RAID controller developed for RAID 0 system won’t work on a RAID system with fault-tolerant array.


Usually, a RAID chip comes within the motherboard for some operating system. However, you can get a RAID controller as a PCI extension card as well. In such a case, you can directly set up RAID 0 and RAID 1 levels in your PC. But for better actions and effectiveness you’re always advised to opt a dedicated RAID controller.


Hardware RAID or RAID controller physically manages the RAID array. In some ways, a RAID controller is a fully programmed miniature computer. It has dedicated processor. Depending on the method using which hardware RAID collaborates with the RAID array, RAID controller is categorized in two groups – controller card based or bus-based and intelligent external RAID controller.


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