The Raid levels benefits of all

The Raid levels benefits of all

RAID actually stands for Redundant Array of Independent [or Inexpensive] Disks. This is the disk drive category where it uses two or more combination of drives for performance and fault tolerance. These types are usually used on servers and on the other hand not really required on ordinary desktop computers.

RAID enables the storing of data redundantly, in various paces, to improve the general storage performance but in a balanced way. There are different levels of RAID starting from level 1 up to level 5. But this was before when it was first introduced by Garth Gibson, David Patterson, and Randy Katz in 1987 in their landmark research paper.

Today, more levels are being defined which are already above five levels. Here are several of the RAID levels:

• Level 0 – Striped Disk Array lacking Fault Tolerance – This offers data striping or the process of spreading out or the distribution of blocks of every file across numerous disk drives. This level doesn’t offer fault tolerance but will improve performance. The bad news is, if one drive fails all are lost in the array.
• Level 1 – Mirroring and Duplexing – This offers disk mirroring. This level offers double read rate of single disks and similar write rate as single disks.
• Level 2 – Error-Correcting Coding – This level stripes data at bit level instead of block level.
• Level 3 – Bit-Interleaved Parity – This level is rarely used and offers byte – level striping.