800xA 5.1 OPC shutdown periodically
800xA system in the site consists of ASCS1,ASCS2 by redundant, Windows 2008 Server (32bit), 800xA 5.1 RevA FP1, RAM 4GB and total tags are 6,000.
OPC DA Connector service for one of the both servers is shutdown approximately every 1 year periodically in the site. So, In order to prevent unexpected problem, I recommanded periodic shutdown every 1 year. But, customer didn't accept it and they is about to upgrade 800xA to the latest version of 5.1 or 6.0.
At this point, do you know this cause?
if you uprade, what is your suggestion for upgrade mathode?
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