--- In firebird-support@yahoogroups.com, Helen Borrie <helebor@...> wrote:

>
> At 07:35 PM 15/02/2011, karolbieniaszewski wrote:
>
> >This software
> >control devices and collects information about the overall activity but not only.
> >Data is a lot - because it is a lot of equipment.
> >Each message from the device must be kept on a coming update of its respective states in the database and generates messages to other devices or the users themselves.
>
> Have you considered a dedicated two-way replication system to solve this? Two servers, taking turns in being replicator/replicant, on either a scheduled or ad hoc basis?
>
> ./heLen
>

I rather fink about the shadow file.
And activate it at some condition.
I believe that this not turn off may users connections
but i must test this.
And i must test performance with shadow file

Karol Bieniaszewski