This file (emwdata.bin) and its backup file (emwback.bin) store information about managed storage arrays and hosts, as well as information about mail server and email addresses used for alert notifications.
These user-specific files enable system administrators to create their own unique view of the storage arrays in the Enterprise Management Window without affecting the information shown to other system administrators. Both files are stored in a default directory depending on your operating system. If needed, you can use your operating system's find option to locate these files.