REDUNDANT ARRAY OF INDEPENDENT DISKS (RAID)


Meaning of REDUNDANT ARRAY OF INDEPENDENT DISKS (RAID) in English

A set of multiple disks that exchange data in such a way as to permit the failure of at least one without losing any data. There are multiple levels of RAID, including:

0- Striping , where data is simply striped across multiple disks to make one larger logical file system; no parity information is used; one dead disk takes out the whole array

1- Mirroring , where one disk is duplicated onto another disk; if either disk fails, the other disk has all the data (no data is lost)

2- Parity (proprietary) , special case. Patented by Thinking Machines, Inc. Hamming code disk array which consists of data drives and multiple parity drives.

3- Striping with parity , where one disk in an n-way stripe is reserved for parity information (also known as byte striping)

4- Striping with parity , where one disk in an n-way stripe is reserved for parity information, using a variable striping unit size (also known as segment striping).

5- Striping with parity , where information (including both data and parity) is striped across all disks in an n-way stripe

S- Striping with parity (proprietary) , where information (including both data and parity) is striped across all disks in an n-way stripe; proprietary to EMC Corp. (no longer in use)

6- Segment striping with multiple parity , an improvement on RAID 5 by having multiple parity drives, allowing for multiple disk failures with no data loss

7- Striping with parity (proprietary) , a method patented by Storage Computer Corp. where data is striped across multiple drives with one or more parity drives (an unofficial RAID level)

Josh's Network English Glossary.      Английский словарь Josh's Network.