Hi
We had done some preliminary testing using registration of large
files > 2GB into DSpace and it worked.
Our approach was to utilize multiple asset stores within DSpace, and
large files were handled by SRB asset store.
The ingest was done through SRB and registration was done into
DSpace. We basically worked off David Little's DSpace SRB
integration patch, additionally my colleague Kate Pechekhonova did
some re-factoring to make it work alongside non-SRB managed asset store.
In our PR (preservation repository) which is managed by DSpace, we
don't plan on allowing direct downloads of large files, since the
same I/O bandwidth issues that prevent DSpace from directly
ingesting large files, are also true for exporting of large files.
Currently we plan on streaming proxies of the corresponding lower res
AV files, through appropriate streaming server, and for qualified
users the large files would be made available for download through
some appropriate client application outside DSpace.
Summary: Instead of ingesting individual large files, think of
ingesting the large file with associated smaller proxy file into your
collection which can be downloadable or stream-able depending upon
your collection policy.
Unni Pillai
Programmer/Analyst
Tel: (212)-992-9741
[EMAIL PROTECTED]
AIM: [EMAIL PROTECTED]
Jabber:[EMAIL PROTECTED]
Digital Library Program
NDIIPP-Preserving Digital Public Television
On Apr 17, 2007, at 8:55 AM, Mark H. Wood wrote:
My position on huge AV files has been that they are too large for the
average user to fiddle with if he has to download the whole thing
before seeing/hearing anything. We ought to have the bitstreams in
DSpace for archival purposes, but we also ought to mount them on a
streaming service and point to them, so that casual users can just
open them with a streaming client. It's fairly easy to build a
trivial SMIL document pointing to a stream and tuck that into an item.
This doesn't address the ingestion performance issue, of course.
Does the "registration" mechanism not suffice for this?
--
Mark H. Wood, Lead System Programmer [EMAIL PROTECTED]
Typically when a software vendor says that a product is "intuitive" he
means the exact opposite.
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