Hi, On Sun, Jul 12, 2009 at 09:48:00AM +0300, Dotan Cohen wrote: > >> Thank you Osamu but I stress that compression / decompression time is > >> not important for this application. That is why I asked on the list > >> what the other advantages and disadvantages of the different formats > >> are. > > > > Hmmm.... then stick with tar.gz since it is supported > > everywhere on Unix. > > > > There are tools for interoperability and native tools. ... > > That was my first inclination but I really would like to have the > redundancies or rar.
This is an interesting point. I see several redundancy tools like par2, dvdisaster, ras, ... http://www.debian.org/doc/manuals/debian-reference/ch10.en.html#_data_redundancy (par2 seems to support similar feature claimed by rar and has many GUI tools.) > I think that 7zip supports this, I am looking into it. 7zip support RAR for unpacking with non-free p7zip-rar package. > I may just add 7zip support. 7zip is FOSS, too, so that is good. but RAR module for 7zip is non-free. FYI: I sometimes use data redundancy for some critical backups with dvdisastar. But I also find that the time to create redundancy data is non-trivial. I tend to make multiple copies as "REDUNDANCY" for backup in most of time. Also, CD and DVD data are written to physical media using Reed-Solomon FEC (forward error correction) thus inherently somewhat redundant. I also used to care about partial recovery and used afio with -Z option than any global compression like zip/tar.gz/tar.bz2. Now I am just lazy tar.gz (or even without compression for speed). Making backup is more important than how we do it! Osamu -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
