Data Acquisition of Energy Meters (Project-2)

We have 8 energy meters namely: ST-1, ST-2, Line-1, Line-2, Generator-1, Generator-2, GT-1 and GT-2. All these meters communicate using MODBUS protocol. We wish to fetch data from these meters and store it in a local MS-SQL database housed in a local server PC. We should be able to access this database. In addition, i) In case of power shutdown of the local server PC, no data loss should be there i.e. the software should be able to retrieve data and store it in the database even for the time period when the PC was shut down. This is a critical requirement. We would provide make and model no of the meters along with memory map for those meters