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 If a PV gives you trouble, a first good step is to see if the IOC is up stably and possibly reboot it. For that you will use the IOC manager which has a user guide here and is started via iocmanager. This guides describes how to start it and how to it works. More detailed information for commonly used IOCs can be found below. The iocmanager allows you to find the IOC in question by using the findPV option. Middle-clicking on elm (or pyDM) screens will show to the PV that has issues.

For a given PV you can also determine which server the IOC is running on and if rebooting the IOC does not help you can consider rebooting the server. Be mindful that this will restart all the IOCs on that server! One way to do that is using "serverStat <machine name> cycle" for any machine with ipmi. Be particularly mindful if the machine in question is a recorder machine as the RAID arrays ideally get extra care. serverStat also takes DAQ devices names (aliases) or PVs (only for PVs originating from the same subnet). 

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