Different RAID levels for Linux, UNIX and Window server
RAID Recovery - Different RAID levels for Linux, UNIX and Window server
RAID (Redundant Array of Inexpensive Disk) is a commonly used term for data storage scheme which is significantly designed for enhancing the better performance, providing data reliability and recoverability. It saves data by distributing it across multiple disks extract them easily in critical condition or one disk failure from remaining disks.
There are actually 10 types of RAID level: RAID 1, RAID 2, RAID 3, RAID 4, RAID 5, RAID 6, RAID 10, RAID 50 and RAID 0+1.
Commonly used RAID levels for Linux, UNIX and Windows:
RAID 0- Striped set without parity- It is responsible for improving overall performance and additional storage but it does not offer protection against disk failure. Disk error can destroy then array, which gradually will affect other disks in the array.
Suggested areas of application: Image editing, video production and editing and any application that require bandwidth.
RAID 1-Mirrored set (2 disks) without parity- It offers fault tolerance in case of single disk failure but overall performance rate is not up to the mark in comparison to other RAID levels as it writes two copies of data simultaneously on two hard disks.
Suggested areas of application: Office application, financial application and pay roll application.
RAID 5- It is one of the most popular RAID among all RAID levels. It provides highest read data transaction rate but write data transaction rate id medium. It protects data in single disk failure but damaged disk requires immediate replacement to prevent it to affect others. Moreover, if second disk fails to work, data will be lost.
Suggested areas of application: Internet web, Email server, Intranet server and file as well as application server.
RAID 10 (nested RAID 1+0) - It provides both fault tolerance as well as improved performance but it is a bit complex process.
Suggested areas of application: Data base server such as Oracle, MySQL and MS-SQL.
