Parchive - Revision history

Anonymoususer852: Contents have been relocated to Parity Volume Set page.

2025-08-08T08:59:22Z

Contents have been relocated to Parity Volume Set page.

Anonymoususer852: Removed extension .par due to lacking citation(s).

2025-08-07T10:18:27Z

Removed extension .par due to lacking citation(s).

Anonymoususer852: Add link to sample files with a basic description.

2025-08-06T22:34:46Z

Add link to sample files with a basic description.

Anonymoususer852: Add identification for par2.

2025-08-05T05:45:47Z

Add identification for par2.

Anonymoususer852: /* Links */ Convert Wikipedia link to Inter-wiki link.

2025-08-02T06:30:16Z

‎Links: Convert Wikipedia link to Inter-wiki link.

Anonymoususer852: /* Links */ Add Wikipedia link.

2025-07-31T22:45:41Z

‎Links: Add Wikipedia link.

Anonymoususer852: Create page. This file format is noted in DwarFS GitHub project page's README.md.

2025-07-31T22:32:06Z

Create page. This file format is noted in DwarFS GitHub project page's README.md.

New page

{{FormatInfo
|formattype=electronic
|subcat=Miscellaneous File Formats
|extensions={{ext|par}}, {{ext|par2}}
|released=2001<ref>[https://sourceforge.net/projects/parchive/files/OldFiles/ parchive Files - SourceForge.net]</ref>
}}
'''Parchive''' (or Parity archive) is redundant file format, which provides a way to apply data-recovery capability concepts of RAID-like systems, via Reed-Solomon code to the posting and recovery of files. Historically, these were multi-part archives that was distributed in Usenet (a.k.a., "network news"), but can still be used in prevention of complete data loss during transit or storage. Parchive is like RAID for files instead of a whole file system.

The technology is based on a 'Reed-Solomon Code' implementation that allows for recovery of any 'X' real data-blocks for 'X' parity data-blocks present. (Data-blocks referring to files OR much smaller virtual slices of files).<ref>[https://parchive.sourceforge.net/ Parchive: Parity Archive Tool - SourceForge.net]</ref>

== Examples ==
Create uniformed recovery file sizes with 100% redundancy for example.dwarfs
par2 create -u -r100 example.dwarfs

== Software ==
* Windows
** [http://www.quickpar.org.uk/index.htm QuickPar]
** [https://github.com/Yutaka-Sawada/MultiPar MultiPar]
* Mac
** [https://gp.home.xs4all.nl/Site/MacPAR_deLuxe.html MacPAR deLuxe]
* Linux
** [https://pypar2.fingelrest.net/ PyPar2]
** [https://github.com/Parchive/par2cmdline par2cmdline]

== Links ==
* [https://parchive.github.io/ Parchive project page on GitHub]
* [https://parchive.sourceforge.net/ Parchive project page on SourceForge.net (Legacy)]

== References ==
<references/>

← Older revision		Revision as of 05:45, 5 August 2025
Line 8:		Line 8:

	The technology is based on a 'Reed-Solomon Code' implementation that allows for recovery of any 'X' real data-blocks for 'X' parity data-blocks present. (Data-blocks referring to files OR much smaller virtual slices of files).<ref>[https://parchive.sourceforge.net/ Parchive: Parity Archive Tool - SourceForge.net]</ref>		The technology is based on a 'Reed-Solomon Code' implementation that allows for recovery of any 'X' real data-blocks for 'X' parity data-blocks present. (Data-blocks referring to files OR much smaller virtual slices of files).<ref>[https://parchive.sourceforge.net/ Parchive: Parity Archive Tool - SourceForge.net]</ref>
		+
		+	== Identification ==
		+	A <code>PAR2</code> file begins with bytes {{magic\|50 41 52 32 00 50 4b 54}}

	== Examples ==		== Examples ==

@@ Line 1: / Line 1: @@
-{{FormatInfo
+#REDIRECT [[Parity Volume Set]]
-|formattype=electronic
-|subcat=Miscellaneous File Formats
-|extensions={{ext|par2}}
-|released=2001<ref>[https://sourceforge.net/projects/parchive/files/OldFiles/ parchive Files - SourceForge.net]</ref>
-}}
-'''Parchive''' (or Parity archive) is redundant file format, which provides a way to apply data-recovery capability concepts of RAID-like systems, via Reed-Solomon code to the posting and recovery of files. Historically, these were multi-part archives that was distributed in Usenet (a.k.a., "network news"), but can still be used in prevention of complete data loss during transit or storage. Parchive is like RAID for files instead of a whole file system.
-−
-The technology is based on a 'Reed-Solomon Code' implementation that allows for recovery of any 'X' real data-blocks for 'X' parity data-blocks present. (Data-blocks referring to files OR much smaller virtual slices of files).<ref>[https://parchive.sourceforge.net/ Parchive: Parity Archive Tool - SourceForge.net]</ref>
-−
-== Identification ==
-A <code>PAR2</code> file begins with bytes {{magic|50 41 52 32 00 50 4b 54}}
-−
-== Examples ==
-Create uniformed recovery file sizes with 100% redundancy for example.dwarfs
-  par2 create -u -r100 example.dwarfs
-−
-== Sample files ==
-See [https://discmaster.textfiles.com/search?mode=deep&extension=par2&format=parityArchiveVolumeSet&format=unknown&sortBy=name.keyword Search results with par2 extensions and are likely parity archive - Discmaster.textfiles.com] for samples.
-−
-These files are usually distributed in a set, containing <code><name>.par2</code> and <code><name>.vol<numA>+<numB>.par2</code>, where <code>name</code> is the name of the file, typically to be created as a parity archive of, and <code><num></code> is an incrementing number, and is often starts with <code>0</code> for <numA>.
-−
-== Software ==
-* Windows
-** [http://www.quickpar.org.uk/index.htm QuickPar]
-** [https://github.com/Yutaka-Sawada/MultiPar MultiPar]
-* Mac
-** [https://gp.home.xs4all.nl/Site/MacPAR_deLuxe.html MacPAR deLuxe]
-* Linux
-** [https://pypar2.fingelrest.net/ PyPar2]
-** [https://github.com/Parchive/par2cmdline par2cmdline]
-−
-== Links ==
-* [[Wikipedia:Parchive|Wikipedia page]]
-* [https://parchive.github.io/ Parchive project page on GitHub]
-* [https://parchive.sourceforge.net/ Parchive project page on SourceForge.net (Legacy)]
-−
-== References ==
-<references/>