Echelon LonMaker - Manual (Page 28)

12 Introduction
LNS Network Database
The LonMaker Turbo Editions includes new features to help you backup, validate, repair, and
synchronize your network database. These features are described in the following sections.
LNS Hot Backup
You can make a hot backup of the network database while you or another user is working in the same
network—without disrupting the other LNS applications. A hot backup is a backup that is created
while one or more LNS applications are accessing the LNS network database. The LonMaker tool
creates the hot backup as a shadow copy of the LNS network database.
To use hot backups, select the Use LNS Hot Backup check box in the network properties:
Backup/Restore options category. This check box is selected by default. When you attempt to back
up your network in the LonMaker drawing and another application is accessing the LNS network
database, the LonMaker tool automatically creates a hot backup of that database.
If this check box is cleared, you can still use the hot backup feature. When you attempt to back up
your network in the LonMaker drawing, a prompt will open giving you the option to close all
applications accessing the network database or make a hot backup. Click Yes to make a hot backup.
See Manually Backing Up a LonMaker Network in Chapter 7, Maintaining Networks, for more
information on using hot backups.
Scheduled Backups
You can use the LonMaker tool (and the Windows Task Scheduler) to automatically backup the
network database periodically. To use the LonMaker tool to schedule automatic backups, open the
network properties: Backup/Restore options category and enter the desired database backup interval
in the Database Backup field under the Auto Save Interval box. The LonMaker tool will then create
a hot backup of the network every n minutes, where n is the specified backup interval.
See Scheduling Drawing Saves and Database Backups in Chapter 7, Maintaining Networks, for more
information on scheduling automatic database backups.
Automatic Resynchronization
The LonMaker tool will attempt to automatically resynchronize a LonMaker drawing to its network
database when it detects an inconsistency internally or between the drawing and the database. This
resynchronization will be transparent, except that you may notice a slightly lower response time during
the resynchronization. The LonMaker tool will perform an automatic resynchronization when a Visio
shape in the LonMaker drawing or a LonMaker object in the LNS database is missing or cannot be
found, or when there is missing or incorrect information in the LonMaker drawing. If the automatic
resynchronization fails for any reason, you will be prompted to manually resynchronize the LonMaker
drawing to the network database.
See Automatic LonMaker Drawing Synchronization in Chapter 7, Maintaining Networks, for more
information on this feature.
Database Validation and Repair
You can validate the structure of and repair the LNS network database and optionally resynchronize
the LonMaker drawing to the repaired database. You must be using the LonMaker tool on a local
client to use the database validation and repair features.
See Manual Network Synchronization in Chapter 7, Maintaining Networks, for more information on
this feature.