Dear Eugene, Personally I have a habit of using bzip2 for archival of data. Negative points: very slow. Positive points: universally supported, lossless. I have lots of data. To be honest most of it I keep in the native format.
I expect to see plenty of comments of lossless vs. lossy compression now :o) N.B. well processed unmerged raw-from-integration .x, INTEGRATE.HKL, mosflm mtz represents pretty good lossy compression. Long term storage: depends on your definition of long term, which will also depend on what you want to do with them... I would guess useful-long-term would correspond to ~ 10 years to ~ 20 years tops. In the past I have written data to tape which I have never attempted to recover. Everything I now have on central file servers (raid systems) on local fast drives and local cheap USB drives which sit unplugged on my desk. Local fast drives fail (more frequently than the manufacturers would admit), raids fail (less frequently but more catastrophically), local cheap USB drives fail. I bank on them not all failing at the same time :o) esp. the ones I leave unplugged. The cheap drives store about 2TB in something the size of a paperback book and are relatively universal with USB connections. But they will fail one day. You weigh up how sad you will be at the loss against the cost of being more certain of not losing the data... Cheerio, Graeme On 11 March 2013 08:39, Eugene Osipov <e.m.osi...@gmail.com> wrote: > Hello everyone, > > I have a couple of questions about images compression and storage: > 1)do someone use it in routine work and does it works well for them? > 2)I found this page by google: > http://bl831.als.lbl.gov/~jamesh/lossy_compression/ > And want to ask about reports of usage of this program (of course if someone > already uses it) > 3)Is there any advice for long-term diffraction image storage? > Thank you for your attention, > > -- > Eugene Osipov > Junior Research Scientist > Laboratory of Enzyme Engineering > A.N. Bach Institute of Biochemistry > Russian Academy of Sciences > Leninsky pr. 33, 119071 Moscow, Russia > e-mail: e.m.osi...@gmail.com
