2006-12-13 20:07:30 · 6 answers · asked by usman M 1 in Computers & Internet ➔ Other - Computers
RAID Level 5 requires a minimum of 3 drives to implement:
Each entire data block is written on a data disk; parity for blocks in the same rank is generated on Writes, recorded in a distributed location and checked on Reads.
RAID Level 6 requires a minimum of 4 drives to implement:
Two independent parity computations must be used in order to provide protection against double disk failure. Two different algorithms are employed to achieve this purpose.
SOURCE:
http://www.acnc.com/04_01_00.html
regards,
Philip T
2006-12-13 20:12:31 · answer #1 · answered by Philip T 7 · 2⤊ 0⤋
RAID 6 uses and extra parity block, which adds greater redundancy in very large drive arrays.
2006-12-13 20:16:35 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The $16 are the ones for home users such as yourself. The $1000+ ones are for use in commercial environments such as data centers where backups are essential to maintain there services.
2016-05-24 00:44:14 · answer #3 · answered by ? 4 · 0⤊ 0⤋
This should help you out!
Cheers!
http://www.staff.uni-mainz.de/neuffer/scsi/what_is_raid.html
2006-12-13 20:12:30 · answer #4 · answered by Antil0ck 4 · 0⤊ 0⤋
another quick link for info
http://en.wikipedia.org/wiki/Redundant_array_of_independent_disks
2006-12-13 20:17:58 · answer #5 · answered by Carl P 7 · 0⤊ 0⤋
plus one
2006-12-13 20:11:13 · answer #6 · answered by RZA 4 · 0⤊ 2⤋