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Network recovery vs. database backup – Echelon LonMaker User Manual

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232 Maintaining

Networks

24. Add, remove, or re-order stencils. Click Finish.

25. The Synchronization Status dialog box appears as the synchronization process begins. It then

displays the progress of the synchronization. Once “Synchronization Complete” appears, click
OK to open your LonMaker network.

26. Verify that your LonMaker drawing accurately represents the network. Ensure that all devices on

the physical network and all the connections between the devices appear on the drawing. You can
refer to the trace log created during the synchronization process. The trace log file is located in
C:\LM\Db\<network> or in the network database path you specified in the naming window of the
Network Wizard. Make changes to your LonMaker network, if necessary, until it matches the
physical network.

27. Compare the recovered LNS network database to your expected results. Because network

recovery occurs while the LonMaker tool is OffNet, required changes to device configuration
properties are stored in the LNS network database instead of being propagated to the network.
Once you have checked the recovered LNS network database and validated your LonMaker
network design, change the management mode to OnNet. To do this, Open the LonMaker menu,
click Network Properties, click the Network Interface tab, and under Management Mode,
select OnNet. If changes to device configurations are required, the LonMaker tool will prompt
you to resynchronize the network with the LNS network database (recommission devices).

Network Recovery vs. Database Backup

Even though you can use network recovery to rebuild an entire network database, you should not use
recovery as a replacement for backing up your LonMaker network design. A backup is faster, more
accurate, and more reliable than using network recovery. You should therefore regularly backup your
LonMaker network design as the primary means of protecting against drawing and database loss. If
your application warrants greater protection, you can use a redundant array of independent disks
(RAID) for the LNS Server. For maximum performance and reliability, use a RAID 5 disk array.

Some of the advantages of regularly performing database backups over using network recovery are as
follows: