G- and K-Series User’s Guide
RAID 0 arrays do not store redundant data, so they are not true RAID applications. If one disk fails, the entire array fails and all array data is lost. The
RAID 1, RAID 1/O (Mirrored Disks)
In RAID 1 and RAID 1/0 arrays (commonly called mirrored arrays) disks are paired, with both disks in a pair containing the same data. When data is written to a mirrored array, it is written
The read performance of RAID 1 arrays can be much better than that of a single disk, while the write performance is slightly lower. In RAID 1/0 arrays, both read performance and write performance are better than those of a single disk.
A mirrored array is also highly reliable, because both disks in a pair must fail for the array to fail. In an array with five pairs of mirrored disks, for example, the array can maintain its integrity even if five disks
RAID 3
RAID 3 arrays contain redundant information in the form of parity data, which is calculated
RAID 3 provides excellent I/O performance for applications that require high data transfer rates such as image processing, video processing, scientific data collection, batch data processing, or sequential reads and writes.
RAID 3 is not well suited for transaction processing or other applications that require simultaneous reads and writes.