Raid Card/Controller By Arno

What is a Raid Card?- A RAID card/controller is a hardware device or software program used to manage hard disk drives (HDDs) or solid-state drives (SSDs) in a computer or storage array so they work as a logical unit.

Functions of RAID Cards

RAID controller chips often come within the motherboard for some operating systems. You can also get RAID controllers as PCI extension cards. In these cases you can directly setup RAID 0 and RAID 1 in your computer. But for better actions and effectiveness you should go for dedicated RAID controllers.

Hardware RAID or RAID controllers physically controls the RAID array. RAID controllers in some sense are fully programmed miniature computers. They have dedicated processors. Depending on the method through which hardware RAID interacts with the RAID array, they are classified into two groups-- bus-Based or controller card based and intelligent external RAID controllers.

Raid Levels- RAID has levels, or methods by which the drives are ganged together; commonly people refer to levels by number. The three most common levels in the consumer and small-office markets are RAID 0, RAID 1, and RAID 5. However, you’ll encounter numerous other options too, including levels 6, 10, 5+1, JBOD (“just a bunch of disks”), and Microsoft’s virtual disk RAID, as well as abstracted RAID implementations such as Drobo BeyondRAID, Netgear X-RAID, and Synology SHR.

Credits:

Created with images by TJStamp - "Home ESXi Server Innards" • freephotocc - "cup of coffee laptop office" • brain.centipedes - "raid_controller_2"

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