In addition to setting the compression for the raster dataset, you can also set the compression for the .ovr pyramids.See Pyramid compression Environment settings.
- Click Geoprocessing on the Main menu of the application you are using and click Environments.
- Click Raster Storage.
- Click the Compression drop-down arrow and click the compression you want to use.
- If JPEG or JPEG 2000 is selected for the compression type, type a value for compression quality.
All raster dataset results created in a file or ArcSDE geodatabase will be compressed in the manner specified.
- Click OK to close the Environment Settings dialog box.