Casio QT-6600 Руководство по установке и восстановлению - Страница 9

Просмотреть онлайн или скачать pdf Руководство по установке и восстановлению для Кассовый аппарат Casio QT-6600. Casio QT-6600 16 страниц. Touch screen smart terminal
Также для Casio QT-6600: Технические характеристики (4 страниц), Руководство по установке и восстановлению (3 страниц)

2. System down and recovery

QT-6600 Installation & Down Recovery Manual

In the QT-6600 system, the check tracking system has their master and backup master and

remote printer printing system has their master printer and backup master printer. If both

masters (or corresponding printers) go down, the check tracking system, cannot continue

any processing. And also if both masters (or corresponding printers) go down, remote

printer printing system cannot continue any processing. Therefore, the system must be

designed such that even if the master goes down, their processing remains unaffected.

The QT-6600 system whose master and backup master, respectively, have files for above

systems simultaneously updates their data during operations. If the master goes down,

control is transferred (automatically for only the remote printer printing system /manually

only for check tracking system) to the backup master, preventing their operation from

being interrupted.

Nevertheless, system reliability should be improved so as to minimize the possibility of

system failure. Poor system reliability disables the system to work efficiently.

System reliability could be improved by the following method.

1) Use reliable system components.

2) Design reliable circuitry.

3) Make sure that trouble with the system can be remedied easily.

4) Provide complete backup to minimize damage caused by trouble.

Item 1) and 2) are concerned with hardware design. Needless to say, they were given the

utmost consideration in designing the QT-6600 system. Item 3) is related to software

design. As an effective solution to these problems, the terminal offers a diagnostic routine

and backup functions.

This section describes the measures provided by the system to prevent trouble, the system

function performed when the system goes down, and the method of system recovery.

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