Raid

RAID

RAID is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

RAID LEVEL

10

RAID 6, also known as double-parity RAID (redundant array of independent disks), is one of several RAID schemes that work by placing data on multiple disks and allowing input/output (I/O) operations to overlap in a balanced way, improving performance.

RAID 1 – This level is also called 'mirroring', which (as the name suggests) mirrors the same data across two disks - providing the lowest level of RAID redundancy. This level offers up to double the read performance over a single drive, but no increase in write speed.

RAID 0, data is written across multiple disks. This means the work that the computer is doing is handled by multiple disks rather than just one, increasing performance because multiple drives are reading and writing data, improving disk I/O. A minimum of two disks is required.

RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk mirroring and disk striping to protect data. It requires a minimum of four disks and stripes data across mirrored pairs.

RAID 5 is a unique version of RAID that uses something called RAID parity. This technique uses parity information or bonus data to calculate any lost information. Parity is distributed among all drives in the RAID. RAID 5 requires roughly one free drive worth of space to store the parity.

CAPACITY UTILIZATION

RAID 10

50%

50%

RAID 1

RAID 6

50-80%

RAID 5

69 - 94%

100%

RAID 0

MIN NUM OF DISK