Device requirements

The size and number of Adaptive Server devices depend on the following constraints:

Although some operating systems can designate an entire hard disk to use as a database device, Windows NT accepts only an operating system file (.dat file) as a database device.

When you install Adaptive Server, the program creates a .dat file in the \data directory of the Sybase installation directory. To use a .dat file as a database device, you can either use the default d:\sybase\data directory or create a device and a directory in which to store it.