srep
par2cmdline
srep | par2cmdline | |
---|---|---|
1 | 28 | |
0 | 682 | |
- | 2.8% | |
2.2 | 0.0 | |
over 2 years ago | 2 months ago | |
C | C++ | |
- | GNU General Public License v3.0 only |
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srep
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Don't Use RAR
I typically don't make use of standard archive formats these days for my own file storage. If I want just pure maximum compression, I'll often use a long-range matcher like FreeArc's srep [1] or lrzip [2] combined with either fast-lzma2 [3] using a p7zip fork [4] for multithreading or use mcm [5] or zpaq.
However, my truly preferred way is using dwarfs [6], which features some really good deduplication and (by default) zstd compression while being mountable. Most of my files are highly compressed and easily accessible without needing to full decompress them. Admittedly, I don't make use of PAR2 or anything of the sort, but I could just do that the traditional way if I so wished.
[1]: https://github.com/Phantop/srep
par2cmdline
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Best archival medium for 3-10 gig video files?
An alternative is including PAR2 files.
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Understanding CD-R and CD-RW (2003) [pdf]
Not only that but if you budget for an expected error rate of let's say 10% you can use par2 to create additional files that add that redundancy to your archives.
https://github.com/Parchive/par2cmdline
- Is this a viable strat to backup while still having some live access to relevant data?
- Par2cmdline is a PAR 2.0 compatible file verification and repair tool
- Tips for Long Term Data storage (20+ years).
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Side-by-side: WinRAR, PeaZip, 7-Zip, WinZip
That's the same reason I do archive files. For parity I personally use (https://github.com/Parchive/par2cmdline) which does create extra files, so I can see how WinRAR would have something to add there.
- Come aggiungere parità a un gruppo di DVD?
- Adding redundancy records to data
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FSArchiver – Filesystem Archiver for Linux
Here's the first example I could find.
https://pthree.org/2014/04/01/protect-against-bit-rot-with-p...
Basically, you take a normal TAR file and creates external parity files that can be used to recover data in the case of bitrot. Something like this would have been great to have on a few data files I had to retrieve from tape that ended up with a bit flip somewhere in the network > disk > tape > disk process.
However, it doesn't look like the program is maintained anymore...
http://parchive.sourceforge.net/
> DISCLAIMER: This project web space is not actively mantained and is presented here for archive purposes. However some project members still montior the project mailings lists if you have questions. (sic)
The last release was in 2004 (Wikipedia says it was active until 2015, but I don't see that).
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Archiver
Check out par2. I don't know personally of an open source one except I used QuickPar for Windows in the distant past. There's also multipar: https://github.com/Yutaka-Sawada/MultiPar and parchive: https://github.com/Parchive/par2cmdline
What are some alternatives?
dwarfs - A fast high compression read-only file system for Linux, Windows and macOS
par2deep - Produce, verify and repair par2 files recursively.
fast-lzma2 - Fast LZMA2 Library
reedsolomon - Reed-Solomon Erasure Coding in Go
NanaZip - The 7-Zip derivative intended for the modern Windows experience
mcm - MCM file compressor
par3cmdline - Official repo for par3cmdline and par3lib
Squirrel - An installation and update framework for Windows desktop apps
chirppy - Play chirp.io chirps with Python