Date: Sun, 07 Mar 1999 23:19:09 -0500 From: Laurence Berland <stuyman@confusion.net> To: Greg Lehey <grog@lemis.com> Cc: Ludwig Pummer <ludwigp@bigfoot.com>, tim@scratch.demon.co.uk, freebsd-questions@FreeBSD.ORG Subject: Re: vinum (how to use after creation) Message-ID: <36E34FBD.CB05405A@confusion.net> References: <199903071254.MAA02531@franklin.matlink> <4.1.19990307101720.00c13100@mail-r> <19990308143012.M490@lemis.com>
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Can someone get a little bit more in depth on the different kinds of plexes? I'm not
quite clear what the differences are. The following basic descripitons are from
www.lemis.com
Plex organizations
The manner in which data is mapped to a plex has a significant effect on the utility
of the plex. Vinum offers three mappings:
concatenated plexes use the complete address space of each subdisk in turn.
A striped plex conforms to RAID 0. The address space is taken from each subdisk
in turn in stripes of a specified size. This makes for more even loading in
many cases.
A RAID 5 plex incorporates error recovery: if each subdisk is located on a
different physical drive, the plex can continue operation even if any single drive
involved in the plex fails.
<SNIP>
--
Laurence Berland, Stuyvesant HS Debate
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Windows 98: n.
useless extension to a minor patch release for 32-bit extensions and
a graphical shell for a 16-bit patch to an 8-bit operating system
originally coded for a 4-bit microprocessor, written by a 2-bit
company that can't stand for 1 bit of competition.
http://stuy.debate.net
icq #7434346 aol imer E1101
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