On Wednesday 22,August,2012 11:43 PM, Camaleón wrote: > On Wed, 22 Aug 2012 21:40:36 +0800, lina wrote: > >> Basically which compressor is the most efficient one. > > Ha, that's like asking "what do clouds smell like"? >:-) > >> I got 2T data, basically won't get a chance to use in future, but still >> need to keep there at least for the next two years just in case. >> >> so I tried the xz, but xz not support the directory? or maybe I don't >> know how to compress the directory. > > This may help: > > http://unix.stackexchange.com/questions/28976/how-to-xz-a-directory-with-tar-using-maximum-compression > >> now tried the .bz2, but still very large. > > For my usual data backup I use tar and bz2 though I don't expect to compress > too much but I need the best interop and compatibility. > > Anyway, what kind of data is that heap of 2 TiB? Thanks. those data files accumulated there for 2 years, today just do the clear up. > > Multimedia binary files (image, video, audio...) use their own > compression algorithms so you are not going to get any noticeable gain > when compressing these kind of files. > > For general purpose data compression, Wikipedia has a good list: > > http://en.wikipedia.org/wiki/Comparison_of_file_archivers > > And also some info on benchmarks: > > http://en.wikipedia.org/wiki/Lossless_compression_benchmarks#Lossless_compression_benchmarks > Thanks again for those links.
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