IT47044: CHANGE RECOMMENDATION FROM 'RAW DEVICE' TO 'COOKED FILE'

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• https://www.ibm.com/docs/en/informix-servers/14.10?topic=md-improving-performance-cooked-file-dbspaces-by-using-direct-io
  
  Below line is present in above link.
  
  In general, cooked files are slower because of the additional overhead and buffering provided by the file system.
  
  But now we recommend to use 'Cooked File' with DIRECT_IO. (using 'Raw device' is obselete ).