I believe I have a similar problem that Syam H. had in this thread Redundant Documents
The main dashboard that I am working on comes in at around 1.7GB fully loaded (overview of yearly data with ability to break down into daily values as needed). However, our UAT server only has 6 GB of free hard drive space. The document will fully reload, but I get the following errors on distribution. When I looked up these errors, it pointed to lack of disk space -- fair enough. Is there anything I can configure that would allow me to reduce the source document *after* the source document has loaded but before distribution (as I understand it's the temp file that gets moved to the published folder, not the source document). If I reduce the size of the source document before distribution, there should be enough file space available to complete the file copy.
(2016-01-24 23:35:22) Information: Completed ReduceData for D:\QV\qvData\qvPublishedSourceDocuments\srcdocs\1\temp\42a09e48-6e84-47fa-ac81-122c8f71f8fe\document.qvw. (Reduce=False, Save=True)
(2016-01-24 23:35:22) Information: Memory Allocation Delta for this file=11.31 Mb. Available Physical Memory Before Reduce=2692.09 Mb. Available Physical Memory After Reduce=2673.03 Mb. Total Physical Memory=2673.03 Mb.