RAID

RAID stands for “Redundant Array of Independent Disks/Devices” or “Redundant Array of Inexpensive Disks/Devices.” RAID is a system that combines multiple hard drives into a single unit to replicate or share data among the drives. Because all of the hard drives are combined into one unit, instead of seeing several hard drives, the operating system only sees one. Multiple hard drives are also utilized to ensure that data is stored safely and securely.

Levels of RAID

There are several different levels of RAID, but the most commonly used standard levels include:

• RAID 0


• RAID 1


• RAID 4


• RAID 5.

RAID 0 features data stripping, which distributes certain parts of the file across multiple drives. This increases performance. The one disadvantage to this type of RAID is if any one drive fails, data could be lost. RAID 1 is used for data mirroring, meaning data is written to two drives simultaneously. Because all data is duplicated on both drives, if one drive fails, the other has a backup. RAID 1 also helps to increase performance. RAID 4 works much like RAID 0, but if there is disk failure for any reason, data can be recovered by a replacement disk. RAID 5 is probably the most popular type of RAID order. It features data stripping and error correction. The end result is a combination of superior performance and high fault tolerance.

RAID Uses

While RAID is typically used in sophisticated high-end computers and in high-level business computing environments, RAID use in personal computers appears to be slowly increasing. In addition, RAID use in computers is slowly finding its way into home computer use or home office environments.

RAID and Security

Now more than ever before, there is a high demand for secure data storage. Because RAID is an extremely high-performance and amazingly secure system for data protection, businesses and individuals may be hard pressed to find a better or more cost-effective system.

Shopping for a RAID System

When shopping for a RAID system, the best place to start your search is online. Most providers will offer an FAQ section which may help to cover any issues or concerns customers may have as well as detailed descriptions of various systems, pricing information, and contact information, if needed. If you are unfamiliar with RAID or you are not computer savvy, it might be worth it to visit a local provider in person.

By Michelle Burton