Hello, Am 07.09.2007 um 19:28 schrieb Blanco, Jose:
> But now I'm wondering if accessing a large > file via Dspace is going to be a problem or not. I don't believe > there > is a limit to the size of the bitstream file you upload, except for > the > limit put upon by using a browser to load the file. Is that > right? And > what about accessing files that are so big, how successful are users > going to be doing that? I guess it depends on the type of file, right? The type of file is probably the thing you should worry about least. Besides timeouts that obviously depend as well from users bandwidth, there is usually also a limit in the file system of participating systems that has been 2 GB for 32bit operating systems until recently. That is certainly a hard limit that should not be crossed, at least if you dont know more about clients accessing your service. But I strongly believe that it does not make sense at all today to accept such large files in your repo. Who will download such a file? What kind of files are likely to be that large? I can think of three cases Audio/Video and Disk Image files. While the latter might be described sufficiently by metadata to decide whether you want to take the time to download them, Audio and video streams should probably presented differently. Sure, if you have well known open license 90 minute movies in DVD quality, they will take their 4,? GB of space, but where to get them from today? If your AV material is e.g. scientific interviews, then probably somebody doesnt want to load them full length to hear the one essential sentence they are after. Then, you should offer these files as streams to make them more accessible and provide it in a useful manner. A transcript with time markers might be useful as well. With todays technology it is probably not yet possible to create such in an automatic process and that makes it imprac- tical to do so. Also, I dont know a simple way to connect DSpace with a streaming server (should not be too hard though). All this does not solve your problem, but I believe it is worth to rethink the way people are actually using bitstreams you pro- vide before running and solve a technical problem that does not actually solve the problem of your users. I know that storing data and using it are also two different things and that DSpace is about storing and preserving first of all, but who will ever pay for that if it is of little use? If you reach your upload limit already by lets say 100MB or 500MB on a client connected by LAN, then this is an issue that I would go for. Then, you might want to investigate the bandwidth avai- lable, the maximum time and maximum size and give us more info to talk about. Bye, Christian ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech
