The default location for export files is ARBORPATH/app/. You can specify an alternate location; see the Oracle Essbase Administration Services Online Help or the Oracle Essbase Technical Reference.
Aggregate storage database exports have limits:
To avoid creating export files larger than 2 GB, Essbase may create multiple export files that include a number suffix in the name, as follows: _1, _2, and so on. For example, if the first file name is /home/exportfile.txt, the next file is /home/exportfile_1.txt.