The levels in the RAID can be classified as the Single Level RAID and the other as the Multiple Level RAID. The Multiple Level RAID is also known as the Nested Level RAID. After the discussion in depth about the Single Level RAID, let us consider the multiple RAID levels of the nested level RAID. There are many advantages as well as the disadvantages associated with the Single RAID Level. Due to this reason of the advantages and the disadvantages the Single Level RAID are used in the different specialization fields of the market or the business requirements. Hence the associated properties needs to be understood before applying the suggestions incorporated regarding the requirements of the systems. There always exist various requirements in the developing of the applications in the business market.

The RAID was implemented long time back and the technology was utilized to produce some best results; but as the market gained the momentum and the requirements of the specific business or any other applications was required then the process of the expanding the levels of the RAID began.

The engineers made a serious attempt to bring the gap in the business or the market requirements and the technology to an end. They began to think whether it is possible to bring out some of the best advantages from more than one RAID level. They thought whether this could be accomplished by the designing of the arrays along with the different possible combinations of the various techniques.

There are many names given to these RAID levels and they are called as nested, variously multiple, or multilevel or the multi RAID levels. Sometimes they are also called as two dimensional. This name of two dimensional is in accordance with the two dimensional schematics that are applied to present the application of two different RAID levels along with the set of disks.

The main reason for the usage of the Multiple (Nested) RAID Levels is that they are the most common in use for the reason to improve performance. The Multiple (Nested) RAID Levels are the best suited for this purpose.

The performance is far better than the Single RAID Levels. The advantageous performance of the RAID 0 in the combination with the other redundant Levels of the RAID such as the RAID 3, RAID 1 or the RAID5 provides the best results for the fault tolerance. The only disadvantage is the cost involved in the implementation, maintenance and the management of the disk drives.

The most common Multiple (Nested) RAID Levels are listed below that are widely used in the practical implementations. They are the following: RAID X+Y, RAID Y+X, RAID Levels 0+1 (01), and RAID Levels 1+0 (10), RAID Levels 0+3 (03 or 53) and RAID Levels 3+0 (30), RAID Levels 0+5 (05) and RAID Levels 5+0 (50), and also the RAID Levels 1+5 (15) and RAID Levels 5+1 (51). Almost all of the Multiple (Nested) RAID Levels use the specific RAID controllers.

These RAID controllers are necessary. But at the same time these RAID controllers offer a challenge for the implementation and the installation of the Multiple (Nested) RAID Levels. The above section discussed and explored several observations regarding the Multiple (Nested) RAID Levels also in contrast with the Single RAID Levels. The obvious facts and the reasons for the implementation of the Multiple RAID levels are considered in detail.

Data Recovery Software - RAID Recovery

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RAID 0
RAID 1
RAID 1+0
RAID 5
Adaptive RAID
Different RAID Levels
RAID Configuration
RAID Advantages
RAID Reliability Issues
Bad RAID Parity
RAID Concept
RAID Controller
Software Vs Hardware RAID
Quantum DX30 Drives
IBM Servers RAID
IDE RAID Controllers
Fibre Channel
RAID SATA Data Loss
SCSI Interface
Hot Swapping
Storage Controllers
Western Digital RAID Drives
Technical Factors RAID
NAS Servers
Storage Area Network

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