PROBLEM
Map documents containing network analysis layers can be extremely large in size. When the documents are large, they may take a long time to open and save.
Network analysis layers contain the input and output features used during analysis. When saved to layer files or to map documents, these features are saved within the file. A couple things contribute to the size of the file:
- The number of features in the analysis layer directly affects the size.
- Saving the document multiple times can increase the size of the document due to file fragmentation. Click here for more information on this issue.
<a href='http://support.esri.com/en/knowledgebase/techarticles/detail/20872' target='_blank'>FAQ: Why does the file size increase after saving a map document (.mxd)?</a>
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