Experimental Physics and
Industrial Control System

[email protected] · Thu, 25 Aug 2011 10:25:21 -0700

On 12:41 Wed 24 Aug     , Pete Jemian wrote:
> Not sure what type of backup you are considering.
> Here's a couple tools or methods:
>
> * persistence of PVs across IOC reboots: autosave, from synApps
> * snapshots of a set of PVs at regular times: SDDS files
> * time-series display of PVs: various including SDDS or rrdtool

I am currently using SDDS and moving away from it.
(no python support, no used outside of epics community)
I looked at RRDtool.
Although that is not a backup utility, that's definitly something I want to use to move away from
timeseries using SDDS. (which I also use) 
Just a question: how do you take a time serie of thousands of PV with rrdtool at one time T?
I assume you had to develop a ca plugin/utility, didn't you?

When I talked about backup, I am refering to snapshot, which can be restored.
sddscasr can do that. Anything else?

As far as IRMIS is concerned, well although I don't know much about it, just hearing IRMIS sounds
complicated. Reading the IRMIS primer is confusing. I just want to take a snapshot and IRMIS, it seems
to me, can do everything ;-)

-- 
Emmanuel

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System