One way to scale Firebird Database is to put it on memory virtual disk or ramfs On linux i can mount a partition in memory (Install ubuntu/debian) sudo mkdir /mnt/ram sudo mount -t ramfs -o size=200G ramfs /mnt/ram mount to show you the partitions mounted and then move your database into the ram partition cp -rp /var/lib/firebird/2.5/data /mnt/ram That large instance could help you with the Firebird cache settings also the extra SSD could do wonders Inspired by the stack overflow big fat server architecture http://highscalability.com/blog/2009/8/5/stack-overflow-architecture.html