While it is possible to install both an ADS and an ADX on the same site (with the restriction that an ADS-Lite cannot be the Site Director for any other ADSs or ADXs), historical data cannot be shared between the two computers. The repository files only exist on one ADS/ADX computer or on the database server computer in the split ADX. The NAE/NCE/NIE can send historical records to only one repository computer.