How to access historical PV data if the PVs are removed from the system

archiver-appliance / epicsarchiverap

This is an implementation of an archiver for EPICS control systems that aims to archive millions of PVs.

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How to access historical PV data if the PVs are removed from the system #88

Closed jokinea closed 4 years ago

jokinea commented 4 years ago

Hi there, I've got funny problem. I have archived PV "x" for two years and I have got a nice database with the PV "x" related data.

Now if I remove the PV "x" from my system how I can still access the historical data? Of course as the work-around I could just keep the PV "x" running as a ghost in the background but is there any other way around this? Thanks a lot!

slacmshankar commented 4 years ago

Will the retiredPVTemplate in getData call (see http://slacmshankar.github.io/epicsarchiver_docs/userguide.html) be of use?

jokinea commented 4 years ago

Hi, ahaha sorry. Thanks a lot for the reply. It seems that my reading ability was the problem in the end. This seems to be exactly what we needed.