Multi-Instance
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InterBase 2007 (equivalent to version 8.0) allows multiple instances of InterBase servers to run simultaneously. In versions previous to 7.5, multiple instances of the InterBase server could not be run on the same machine. In these earlier versions, when an application utilized one version of InterBase, another application that utilized another version of InterBase could not be run. With InterBase 7.5, and later versions, you can run one previous version (major release) of InterBase, i.e. InterBase 6.x while you are running a newer version simultaneously.