A RAID (redundant array of independent disks) combines multiple physical drives into one virtual storage device that offers more storage and, in most cases, fault tolerance so that data can be recovered even if one of the physical disks fails.
RAID configurations are organized into levels such as RAID 0, RAID 1, RAID 5, RAID 6 and RAID 10. RAID levels 0 through 6 are called standard levels. The most common RAID configurations are RAID 0 (striping, where data is split into blocks stored across different physical disks), RAID 1 (mirroring, where multiple copies of data are stored on separate disks for redundancy), RAID 5 (distributed parity, which includes striping plus storing parity information for error recovery), and RAID 6 (dual parity).
Steven has a technical background in System Design, Unix Systems and Enterprise Architecture & Design. He also has a background with 15 years of Unix Systems Primarily HP-UX, Linux and AIX Open Systems. He also has a background in programming languages such as C, Perl, PHP, CGI and Web Environments.