Guten Tag Kjell Rilbe,

> Claudio Romero skriver:
>> http://www.firebirdsql.org/manual/gfix-shadow.html
>>
>> Shadow is a replication at transaction level and real time. The two or
>> more copy databases are identical. Good for disc failure

> So what is technically the difference between shadow files and
> replication, apart from the fact that shadowing is built into FB while
> replication requires a third-party tool?

> It seems to me that both create a second file that's kept up to date
> transaction by transaction.

shadow runs on the same server (think of it as a raid 0) if
your server dies your data may be gone ,
replication copies your data to another server
which may be far away but may have a more or less small timelag
(if your office burns down you still have a current copy at home/
other office/internet provider(rented server)


--
Mit freundlichen Grüssen
Hannes Streicher mailto:HStreicher@...