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14
Backup System
Outline
■ Normal operation
The POS server system has several database such as the Transaction DB, Preset DB among others on
POS server. Throughout this manual these databases are referred to as Master Databases.
Each terminal reads/writes to the Master Databases in real-time while you are executing POS
operations.
Each terminal has two parts to the Master Databases. The two databases are referred to as the Local
Transaction DB and the Preset DB.
POS server
Preset
Transaction
■ Operation if the POS server is down
If the POS server is down and no backup server exists on your POS system, the window to select Retry
or Shutdown will be displayed at the POS terminals. Operation at the POS terminals cannot be done
until the POS server is recovered.
Terminal 1
Copy
Preset
Local
Transaction
Update
Registraion
Parts of Master
Databases
Terminal 2
Preset
Local
Transaction
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