What is raid ?

RAID: Redundant Array of Independent (or Inexpensive) Disks. Type of disk, often used on servers, where several physical disks are combined into an array for better speed and fault tolerance.
Level 0 implements data striping where file blocks are written to separate drives. Does not provide fault tolerance, because failure of one drive will result in data loss.
Level 1 implements data mirroring. Data is duplicated on two drives either through software or hardware. Provides faster read performance than a single drive.
Level 2 - not used in practice. Data is split at bit level at written to multiple drives.
Level 3 - requires at least 3 drives. Data block is striped at byte level across drives and error correction codes (parity info) is recorder on another drive. Provides fault tolerance but slower writing performance.
Level 4 - Similar to Level 3 but provides faster performance because it uses blocks for striping.
Level 5 - Similar to Level 4 but improves performance but also striping parity info across multiple drives.
Level 6 - Similar to Level 5 but also uses second parity scheme for better fault tolerance.
Level 7 - Proprietary RAID design by Storage Computer Corporation. Faster than other levels because it uses multiple levels of cache and asynchronous I/O transfers.
In addition multiple RAID levels can be combined to improve performance or reliability.

RAID (redundant array of independent disks; originally redundant array of inexpensive disks) is a way of storing the same data in different places (thus, redundantly) on multiple hard disks. By placing data on multiple disks, I/O (input/output) operations can overlap in a balanced way, improving performance. Since multiple disks increases the mean time between failures (MTBF), storing data redundantly also increases fault tolerance.

use can use raid by spliting a server into 2 so there is backup if it crashes

RAID means Redundant Array of Independent or Inexpensive Disks. Raid is a technology that allows high levels of storage reliability. With Raid level 1 you want to instantaneously and automatically backup your data. RAID-3 this type uses striping and dedicates one drive to storing information.

[FONT=Times New Roman][SIZE=3]It is the cronym for Redundant Array of Independent Disks, which is a techacronym for Redundant Array of Independent Disks.[/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3][/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3]RAID is a technology that provides increased storage functions and reliability through redundancy, combining multiple disk drives components into a logical unit where all drives in the array are interdependent. [/SIZE][/FONT]
[FONT=Times New Roman][SIZE=3] [/SIZE][/FONT]
[SIZE=3][FONT=Times New Roman]For more details, pls make reference to: http://en.wikipedia.org/wiki/RAID#Further_reading[/FONT][/SIZE]

Raid an abbreviation for Redundant Array of Independent Disks is a technology that provides amplified storage functions and consistency through redundancy, joining multiple disk drives components into the logical unit where all drives in the array are codependent.

You have given a beneficial information. I also want to share. Raid standa for Redundant Array of Inexpensive Disks. It was developed a system whereby a large number of hard drives at low cost could be connected to a single large-capacity storage that offers superior performance, storage capacity and reliability in the solutions more storage.

Redundant Array of Independent, disks, disk drives class that takes two or more drives in combination for fault tolerance and performance. RAID disks are used frequently on servers but is usually not necessary for personal computers. RAID can save the same data redundantly in a balanced combination to improve performance.

Is the overflow of the world kept leading his troops, cheap an independent meaning. RAID is a greater degree of stability is storage technology gives them now. Step 1 I want to automatically back up but was immediately attacked. "This figure was revealed, was inaugurated Invasion 3 makes use of the drive that contains data.