We are considering Firebird 1.5 for a mission critical, on-line Internet
based system, that requires 99.9% uptime. I know that this might be a
pipe-dream, however it would appear that Firebird has what it takes to do
this. Here's our planned setup so far:

1. 3 x Dell PowerEdge servers running RedHat Linux 9, all with RAID 5
drive arrays, collocated at a major facility here in Phoenix, Arizona

2. Firebird 1.5 Super Server running on each box. Our database is
about 200 tables in size, with stored procs, triggers, etc.

3. Apache/PHP for the web application to work these databases.

I know that Firebird has a 'Shadow' facility that will make a shadow version
of the database, however I understand that you don't want to try and do this
with a network connection between the boxes.

Therefore, if I want to construct a way to 'load balance' on this array of
computers, what would be the best way to look at this?

Also if I need to make a mirror'd copy of the database on a computer at a
different location (as a fall back if something in the main site goes down),
are there any tested synchronization systems available for Firebird that
anyone can recommend?

Thanks
Myles

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Myles Wakeham
Director of Engineering
Tech Solutions Inc.
Scottsdale, Arizona USA
Phone (480) 451-7440
Web: www.techsol.org