What should I do if large files will not copy over to the DataVault?

This problem will occur only with FAT32 file format.

In FAT32 format, the file size limit for a single file is 4GB. An individual file that is 4GB or larger cannot be copied to the Iomega Hard Drive due to FAT32 file format constraints.

If you have a single file that is 4GB or larger, try using a file compression utility to make the file smaller. If you can compress it to less than 4GB, you should be able to copy it to the DataVault without any problems.