The RAID 1+0 is the combination of the RAID 0 and the RAID 1. The RAID 1+0 is also called as the RAID 10. The purpose of combining the RAID 0 and the RAID 1 is that to combine the technology of both the data stripping and the data mirroring. The data stripping is for the speed of the RAID system and the data mirroring is for the fault tolerance of the system. Hence by combining the properties of two different RAID systems we are combining the associated properties and thus increasing the efficiency of the system. Hence in this particular RAID drive that is the RAID 1+0 the speed as well as the fault tolerance; both are combined. This feature is obtained by simply combining the two different concepts.

Some of the important features of the RAID 1+0 are discussed below. The consideration in the sense of explanation for the single RAID 1+0 can be termed as similar to that of explaining the two different RAID’s that is the RAID 0 and the RAID 1. Hence the below description provides the explanation as per the standards of the RAID Advisory committee. Common name for the RAID 0 or Level 0 is in regard with the data stripping. Data is distributed across the disk in the arrays and there is no redundancy information provided.

The data reliability is lower than the single disks. Suppose the data A is on one disk the data B will be on the other disk and again the data C on the first disk and data D on the second disk and so on. But the performance measured in terms of the speed is high. The data transfer is also higher because of the speed and the data involved in the I/O operations is also higher in terms of the read and write operations. Maximum I/O rate is provided in the case of the RAID 0. But the reliability of the data is much lower.

Now, let us consider the features of the RAID 1. The sole purpose of using the RAID 1 is because the system to be made a fault tolerant one. The performance in terms of the speed is not well here. The technique of data mirroring is done here. The data mirroring involves the duplication of the data. The duplication is almost 100%. This symbolizes that the two copies of the data are kept on the two different systems. This also means that if one of the disks fails then the other must provide back up. Hence in this sense the data is secured.

The sensitive data has the security in terms of the technique called as the data mirroring. This gives the data the 100% redundancy. The common name is mirroring and all the data is replicated on almost all the N number of disks used for the RAID 1 duplication. Usually there are only two disks in any of the RAID 1 systems. The data reliability is higher in comparison with the other RAID types i.e. the RAID 2, RAID 3, RAID 4, and RAID 5. But in the case of the RAID 6 the data reliability is the highest. The data transfer is higher than the single disk operation in the case of Reading of data. But at the time it is almost similar to the data write operation in the single disk.

The maximum input output rate of the data transfer can be slightly compared to the single disk as twice the read operation and the write I/O transfer is as same to that of the single disk. Usually the data is mirrored first and then stripped in the RAID 1+0. First Mirroring and then stripped set is less fault tolerant than the set that is first stripped and then mirrored. In the RAID 1+0 set there is no parity.

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