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General Software Discussion / Re: alternative to filehamster?
« Last post by mwang on September 08, 2009, 08:52 PM »mwang[/b]: there's rsync version(s?) for Windows, the one I bumped into was a cygwin build... and I try to stay away from cygwin as much as possible.-f0dder (September 08, 2009, 07:49 PM)
That, and DeltaCopy were what I found the last time I looked around. From memory they all had problems dealing with unicode file/folder names, so I gave up.
rsync in and by itself isn't enough for backup though, imho - it should be combined with script/whatever to get the same kind of functionality as time machine has. I use rsnapshot on my linux box, works like a charm.-f0dder (September 08, 2009, 07:49 PM)
My linux skill is basic, so I followed a tutorial to set up rsync, I believe. Don't really remember what, if any, other tools were employed. I'll keep your advice in mind when I maintain it next time. Thanks!
Well, for what I know, you need a filter driver (.sys) to detect "X bytes written too ffset Y in file Z" change notification (rather than just getting "file has changed") - unless you can ask Volume Shadow Copy Service or something.-f0dder (September 08, 2009, 07:49 PM)
Thanks for the explanation. I'm not a programmer, so I can only observe. SpiderOak doesn't install a driver either (no .sys files). It does detect block level changes not only because they advertise the feature on their web site, but also the uploads (of changed large files) take so little time that I don't think it's possible otherwise.
It couldn't compare a file to its earlier versions since they sit remotely (well, I do have local backups, but SpiderOak wouldn't know where to look). I don't know if it asks Volume Shadow Copy Service or other system services for the necessary information. But as a cross-platform service with linux and mac os clients, it would have to ask different system functions on different systems if it doesn't do it by itself. That's still possible, of course.