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Top Forums UNIX for Dummies Questions & Answers Unable to understand RAID PARTITION Post 302897716 by jgt on Tuesday 15th of April 2014 02:33:07 PM
Old 04-15-2014
Suppose you have a RAID 5 configuration consisting of 4 disks.
If you store "1" on drive 1, "2" on drive 2, "3" on drive 3, and "6" on drive 4, then you can always determine the value of any one missing disk.
ie
1+2+3=6
6-3-2=1
etc.
 

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CD-DRIVE(1)							   User Commands						       CD-DRIVE(1)

NAME
cd-drive - manual page for cd-drive version 0.83 i686-pc-linux-gnu SYNOPSIS
cd-drive OPTION... Shows CD-ROM drive characteristics. DESCRIPTION
-d, --debug=INT Set debugging to LEVEL -i, --cdrom-device[=DEVICE] show only info about CD-ROM device -q, --quiet Don't produce warning output -V, --version display version and copyright information and exit Help options: -?, --help Show this help message --usage Display brief usage message AUTHOR
Rocky Bernstein rocky@gnu.org COPYRIGHT
Copyright (C) 2003, 2004, 2005, 2007, 2008, 2011 R. Bernstein This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. Have driver: GNU/Linux ioctl and MMC driver Have driver: cdrdao (TOC) disk image driver Have driver: bin/cuesheet disk image driver Have driver: Nero NRG disk image driver Default CD-ROM device: /dev/scd0 SEE ALSO
cd-info(1) for information about the CD inside a CD-ROM. cd-drive version 0.83 i686-pc-linux-gnu October 2011 CD-DRIVE(1)
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