Tango archiving system description

The archiving system allows storing control information in the following; Oracle or MySql; databases:

Databases Description

• Historical DataBase  - HDB : Persistent storage of attributes values which are scanned at a minimal period of 10 seconds.
• Temporary DataBase  - TDB : Volatile storage of attributes values which are scanned at a minimal period of 100 milliseconds. The data are kept 3 days in the database.
• Snapshots – SNAP: Persistent storage allowed taking a picture of a set of attributes values.
  

Devices

To achieve theses archiving the following devices are requested :

HDB devices

• HdbArchiver : Records the attributes values in the HDB database.

• ArchivingManager : Allows to start / stop the attributes archiving without GUI (use load-balancing). The same device is used to manage the HDB and TDB archivers.

• HdbExtractor : Provides database extraction methods based on various criteria

• HdbArchivingWatcher : Controls the global archiving status and issue periodically refreshed reports

TDB devices

• TdbArchiver : Records the attributes values in the TDB database

• ArchivingManager : Allows to start / stop the attributes archiving without GUI (use load-balancing). The same device is used to manage the HDB and TDB archivers.

• TdbExtractor : Provides database extraction methods based on various criteria

• TdbArchivingWatcher : Controls the global archiving status and issue periodically refreshed reports

Snap devices

• SnapArchiver : Records the attributes values picture in the SNAP database.

• SnapManager : Manages the snapshots configuration and send the request to the archiver

• SnapExtractor : Provides database extraction methods based on various criteria

GUI tools

The implemented graphical tools are :

• The HDB and TDB archiving is managed thanks to the GUI named Mambo (see Mambo User manual)
• The SNAP archiving is managed thanks to the GUI named Bensikin (see Bensikin User manual)
• The GUI named SGAD generates scripts to create MySql databases.