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External RAID

Raid stands for Redundant Array of Inexpensive Disks. The RAID technology allows for very high levels of reliability of storage from PC disk-drive components. The devices are arranged into a raid array for redundancy. RAID is now used as computer data storage and can divide as well as copy the data among one or more than one hard disk drives.

The main purposes of using a RAID are

  1. To increase the reliability of the data.
  2. To increase the input/output performance of the system.
  3. To combine two or more than two physical hard disks into one single unit using hardware.
  4. You can retrieve your data successfully through RAID recovery if it is accidentally lost.

The three main terms involved in RAID are

  1. Mirroring which involves the writing of the data to more than one disk. The data is identical in all aspects.
  2. Striping, that involves data splitting into more than one disk.
  3. Correction of the errors, which involves the redundant parity data that is stored to detect problems and repair them if possible by some method.

External RAID Array:

You can attach many storage solutions to your PC system. RAID array systems bridge the gap between inflexible high-speed internal storage and flexible but costly storage solutions. Raid controllers fulfill all the needs and requirements of online storage of data today. External raid enclosures have become more common nowadays. Some of the examples of external RAID storing devices are the SATA Hard drive enclosure, eSATA enclosure, SATA USB enclosure, external RAID enclosure, etc.

Hardware RAID Array:

Hardware RAID comprises mainly of two parts, which differ in the way they interface the raid array to the system.

  1. Bus-based or controller card hardware RAID: This is the more orthodox or the conventional type of hardware RAID. This also is the most commonly used RAID hardware.
  2. Intelligent, external RAID controller: This is slightly more complex as far as the implementation is concerned, though it does offer good capabilities, and also advanced features which are more expandable than the bus-based type implementations.

The external storage raid systems are easily available online through some of the websites which are well-known. Free shipping is provided by the concerned company. You can even find the reviews of the various products offered for your data storage and needs.

Raid controller: A RAID controller is the one that manages the physical disk drives and makes them presentable to the computer as units of logic. Hardware RAID is almost always implemented by it.

A Raid controller provided front-end and back-end interfaces. A simple raid controller card may fit in the PCI expansion card or can be just built in the motherboard.

RAID data recovery: There often arises a situation when you lost a particular file containing very urgent and important data and you want to recover it from the system. RAID data recovery services help you recover your lost, corrupted or damaged data and rebuild your system thereby increasing its performance as well. RAID levels offer highly reliable data as well.

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