RAID-3 (non-consumer): This type uses striping (RAID 0) but dedicates another drive to storing parity information.
It has no advantage over RAID-3 and has generally been superseded. RAID-2 (non-consumer): This type uses striping across disks with some disks storing error checking and correcting (ECC) information.Again drives are typically added in multiples of two. RAID-1 provides the best performance and some fault-tolerance in a multi-user system, although for a single user it's unlikely to see as much benefit. Write performance is the same as for single disk storage. Read performance is improved since either disk can be read at the same time, meaning if one disk is busy the other is accessed. RAID-1: This type is also known as disk mirroring and consists of at least two drives that duplicate the storage of data.Drives are typically added in multiples of two. It offers the best performance as data is read/written to both drives simultaneously, but no fault-tolerance so if one drive fails you lose both drives data. RAID-0: This technique has striping but no redundancy of data.Below are the different kinds of a RAID that are used today. These RAID configurations can and are used independently or in different combinations.
I know of 9 different kinds of RAID plus a performance RAID that has no redundancy built into it, however on everything outside of the high-end server environment you'll only be offered the four main versions: RAID 0, 1, 0+1 and 5. The Rampage V Extreme's SATA and SATA Express ports connected to Intel's X99 chipset support RAID 0, 1, 5 and 10 modes. This article focuses on setting up a RAID array with an Intel motherboard for the single user. Both hard disks and SSDs can be used, and while it's advised that matching drives are used in a single array for best performance, it's not strictly required. Additionally, there is a third type of RAID that offer the best of both worlds all of which we've explained below.Ī RAID array appears to the operating system to be a single logical drive, regardless of how many individual drives are part of the RAID array.
Some use multiple disks to increase performance – think a two or three lane road instead of single, that has to serve traffic going in two directions – while others are used to increase reliability. There are many ways to use RAID and there are several different types of array. NOTE: redundancy is NOT a form of backup! Almost all have redundancy to offer some data protection, while RAID 0 is built purely for speed. What is RAID? A Redundant Array of Independent Disks, or RAID, is a way of storing the same data across multiple hard drives. Note: This article was updated in September 2014.