Most large files are audio/video files. Downloading the whole file may not be a good solution here. Maybe adapting the large files to suit the users' needs, e.g., if the user's bandwidth or usage environment is limited, then adapting the audio/video files into lower quality streams, would be a more sustainable approach?
Besides, DSpace does not necessarily just give whatever it holds to the users. The dissemination can be adaptive based on various factors. Building such an adaptive dissemination framework shall be very interesting. Zhiwu Xie -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Cory Snavely Sent: Tuesday, April 17, 2007 6:55 AM To: [email protected] Subject: Re: [Dspace-tech] Large files and DSpace Interesting thought, but using bittorrent would require the setup of several peer sites in order to do its thing. Probably a good idea from a preservation standpoint but I would suspect not practical for many, and there are of course easier ways to support large transfer demands. I've thought that if a need emerged for us to handle this type of media, the DAS we use for the assetstore would be just fine, as of course would a SAN or NAS arrangement, but submissions would probably need to come on removable media and be loaded by staff, and distribution would probably need to be via streaming, which I know has been discussed on this list. To me those are the indicated approaches for this issue. c On Mon, 2007-04-16 at 22:30 -0300, Afonso Comba de Araujo Neto wrote: > The problem is very intriguing and I felt like giving my 2 cents. > > I don't even think the problem is where you'll put it or how you'll > integrate such files to DSpace. The main problem is how a regular user > would download such a gigantic file. > > My first try would be to use another technology which is focused on > handling such downloads. The best technology I can think of for this > kind of thing is bit torrent. If I had to do that, I would include on > DSpace just a .torrent file and instruct the users how to download > using the bit torrent protocol (links to free clients, etc.). Not only > it would be way better than a simple http download, but it could > alleviate the strain on your server, which certainly would build up > with such lengthy downloads. > > > Regards, > Afonso Araujo Neto > > > > > > Citando Gary Browne <[EMAIL PROTECTED]>: > > > We have an assetstore residing on a SAN which solves the capacity > > issues, but as Cory says it is more the logistics of getting items into > > and out of the assetstore which is the problem. > > > > Regards > > Gary > > > > > > Gary Browne > > Development Programmer > > Library IT Services > > University of Sydney > > Australia > > ph: 61-2-9351 5946 > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Cory > > Snavely > > Sent: Tuesday, 17 April 2007 10:55 AM > > To: [email protected] > > Subject: Re: [Dspace-tech] Large files and DSpace > > > > I'd be interested to know how using SRB addresses the problem, which I > > understand to be the logistics of handling such a large file in both the > > > > user interface and the back end. Does it? > > > > Cory Snavely > > University of Michigan Library IT Core Services > > > > ----- Original Message ----- > > From: "Ekaterina Pechekhonova" <[EMAIL PROTECTED]> > > To: "Gary Browne" <[EMAIL PROTECTED]> > > Cc: <[email protected]> > > Sent: Monday, April 16, 2007 8:12 PM > > Subject: Re: [Dspace-tech] Large files and DSpace > > > > > >> Hi Gary, > >> you can configure Dspace to use SRB instead of regular assetstore. > > Some > >> basic information can be found in the docs which come > >> with Dspace.Also you can check this link: > >> http://wiki.dspace.org/index.php//DspaceSrbIntegration > >> > >> Kate > >> > >> Ekaterina Pechekhonova > >> Digital Library Programmer/Analyst > >> New York University > >> Libraries > >> email: [EMAIL PROTECTED] > >> phone: 212-992-9993 > >> > >> ----- Original Message ----- > >> From: Gary Browne <[EMAIL PROTECTED]> > >> Date: Monday, April 16, 2007 7:41 pm > >> Subject: [Dspace-tech] Large files and DSpace > >> To: [email protected] > >> > >>> Hello All > >>> > >>> > >>> > >>> I think I posted a question like this last year but I've just become > > a > >>> dad for the first time and have a bit of brain meltdown. I tried > >>> searching for answers on the annoying sourceforge list archive > > (should > >>> I > >>> start a separate thread about this...?) but didn't find much. > >>> > >>> > >>> > >>> My question is a general one in that I'm wondering how people are > >>> handling large files in DSpace (getting them onto the server, > >>> submissions and publication/access)? Is the SymLink stuff the only > >>> option at this point? For example, we have (and will be getting lots > >>> more of) a 12GB video file to be used in one of our collections. I'd > >>> like to nut out what the possible options are before I try anything. > >>> > >>> > >>> > >>> Thanks and kind regards > >>> > >>> Gary > >>> > >>> > >>> > >>> > >>> > >>> Gary Browne > >>> Development Programmer > >>> Library IT Services > >>> University of Sydney > >>> Australia > >>> ph: 61-2-9351 5946 > >>> > >>> > >>> > >>> > > ------------------------------------------------------------------------ > > - > >>> This SF.net email is sponsored by DB2 Express > >>> Download DB2 Express C - the FREE version of DB2 express and take > >>> control of your XML. No limits. Just data. Click to get it now. > >>> http://sourceforge.net/powerbar/db2/ > >>> _______________________________________________ > >>> DSpace-tech mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/dspace-tech > >> > >> > > ------------------------------------------------------------------------ > > - > >> This SF.net email is sponsored by DB2 Express > >> Download DB2 Express C - the FREE version of DB2 express and take > >> control of your XML. No limits. Just data. Click to get it now. > >> http://sourceforge.net/powerbar/db2/ > >> _______________________________________________ > >> DSpace-tech mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/dspace-tech > >> > > > > > > ------------------------------------------------------------------------ > > - > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _______________________________________________ > > DSpace-tech mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/dspace-tech > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _______________________________________________ > > DSpace-tech mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/dspace-tech > > > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. 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