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RAID HDD Explained

What does RAID stand for?

RAID is an acronym for redundant array of inexpensive disks. RAID allows huge capability of storage of the disks of PC components in the form of arrays. RAID HDD can be used now for large storage techniques by dividing and copying or replicating the data among multiple hard disk drives. With this the concept of RAID storage has become even more popular.

The principle involved in RAID is the combination of two or more hard disks to a single unit of logic using as special hardware or software. The three most key concepts in RAID hard drive are mirroring that involves writing of identical data to more than a disk, striping, which stands for the splitting of data across more than a disk and the third is the correction of the errors where the parity data which is redundant is stored in order that the problems can be detected and repaired. The main purpose of using a RAID HDD is to make the data reliable and available. For this purpose, there are various schemes of RAID that are used, for example: RAID 0, RAID 3, RAID 5, etc.

How can you set up a RAID array?

A RAID array can be created by first making a floppy that contains the RAID controllers drivers, configuration of the RAID array, installation of the RAID controller drivers, partitioning the RAID arrays, format of the partitions of the drives and by installing the operating system. Hard disk drives are unfortunately slow at saving the data but RAID storage is very effective.

Basically, the point of setting up a RAID array is to form a large storage capacity device and get the benefit of superb raid performance.

What are the advantages of RAID?

The implementation of RAID had three causes:

  1. Redundancy: This provided allowance for a backup of data in the storage array during failure. The failure of any array can be prevented by swapping out a new drive without turning the system off. The RAID performance depends on the number of drives used in the array.
  2. Better performance: The parallelism or the ability to the access of multiple disks in the same time allows for the data to be written or read from an array in a faster way than that would be possible in a simple single drive. One example is that of a drive with multiple actuator.
  3. Lower costs: Since the main principle involved in the RAID is to provide greater or the same storage capacity to a system in comparison with that for a single drive, there is a high price difference.

You can easily recover all your lost, corrupted or damaged data by using an external RAID. For this purpose, you can avail of some of the data recovery systems online too.

Thus, usage of a RAID HDD provides you with storage efficiency and more reliability of your data.

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