What Is This All About?
Protecting data is probably one of the most important things to do especially if the user has important data. Always remember that when it comes to storage units that are physical, they tend to wear out because that is simply how machines work. Time will come when they will end or malfunction due to accidents or certain circumstances. Because of that, having a backup is essential.

One of the ways to protect files is through the RAID arrays. RAID is an acronym that stands for Redundant Array of Independent Disks. It is a manner in which data are stored in different places on multiple hard disks to prevent further inconvenience in case a hard disk fails. In spite of the name, however, not all the RAID levels are particularly providing redundancy.

The Concept Behind RAID
Started in 1987, three people—David Patterson, Randy Katz, and Garth Gibson—coined the term RAID based on the idea that multiple, inexpensive drives can outperform a single, top-notch quality one. It may sound bizarre, but sure enough, their idea became a hit. Through the redundancy, users are assured that their data is indeed somewhere and that having a failed hard disk becomes less of a serious problem. With that, this method becomes more reliable than just leaning on a single hard disk drive.

How It Works?
With the multiple disks, enable the input/output operations. Improve its performance by letting them overlap in a balanced way. There are two effects arising from this: (1) increase of fault tolerance and (2) increasing mean time between failures. The way that the RAID arrays appear seems to be operating in one machine only, but the disk mirroring/striping does the job of allocating the data.

Such mirroring function enables the data to be placed in more than just one drive while its stripping partitions divide it for the storage space, making it effective in storing the data. It is recommended that the disks have a good amount of memory so that it is easier to store the data more effectively.

The idea behind RAID is still widely-talked about because of how simple yet effective the tool is. Because of this, many also considered this option for effective storing of data. Availability of storage units for retrieving data can be your best friend especially in times of need. The most important part is that there is back up and that the data is protected. Coping will be easy when that is the case.