Does ADABAS utilize the UNIX file system or are 'raw devices' processed as well? Can data buffered in main memory be lost in the event of a system failure?
ADABAS uses raw I/O and UNIX files. When UNIX files are used, they must not be subject to UNIX buffering. ADABAS has its own buffer management. Raw devices are preferred from a performance point of view; UNIX files are preferred from an administration point of view. Data consistency is achieved by using the system's own logging function.