Re: archiving system

[Jack <mauro.giacchini@lnl.infn.it>]

 Dirk,
if you want have a look on the HyperArchiver development status please 
go here
http://www.lnl.infn.it/~epics/joomla/archiver.html

Loris, who has develop the java Archiver interface to Hypertable is 
closing his job with us and looking for a term position...

Regards
-Mauro

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Mauro Giacchini

Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Legnaro
V.le dellâUniversita', 2
35020 LEGNARO (PD) â ITALY
Tel. +39.049.8068558
Fax. +39.049.641925

EPICS _at_ LNL http://www.lnl.infn.it/~epics/

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On 9/28/2010 4:40 PM, Ralph Lange wrote:
>  Dirk,
>
> James Rowland from Diamond recently did a poll and has the most 
> current list of archiving solutions that are used with EPICS. I think 
> he will talk about it at the upcoming EPICS Collaboration Meeting in 
> two weeks.
>
> My first order answer would be:
>
> There's the Channel Archiver: old, stable, fast, very widely used, but 
> not based on a RDB.
> There are several other archiving solutions, some of which use a RDB 
> for storage, others don't. Different ages, different languages, 
> different file formats or RDB systems for storage. Their common 
> feature: they are all used at one lab only, two labs maximum.
> CSS databrowser support is available for the Channel Archiver, and for 
> the Oracle-based archiver at SNS. (The latter might not be part of the 
> DESY CSS.) There is experimental support for HyperArchiver (Channel 
> Archiver writing into Hypertable).
>
> While RDB-based archiving solutions have a tendency to be slower (as 
> well in writing an archive as retrieving from it), I don't see an 
> issue here for your system (unless your 10K channels are updating 
> every second or faster).
>
> Hope this helps,
> Ralph
>
>
> On 28.09.2010 10:23, Dirk Martin wrote:
> > Hallo,
> >
> > at the S-DANILAC of the TU Darmstadt we're using EPICS to control power
> > supplies for example. Since it is necessary to observe ~10000 PVs for a
> > period of nearly four weeks, we decided to introduce an archiving system
> > based upon a relational database. We're using CSS (from the DESY) and
> > would like to plot the archived data in the Data Browser.
> >
> > That is why I ask you, whether you could tell me, which archiving system
> > is wide-spreaded enough and best for this job.
> >
> >
> > Thanks in advance and best regards
> >
> > Dirk Martin