The amount of data generated by a simulation is very large. Therefore you should only save as much data as is needed for your further work. Nevertheless, very large files will often be generated.
If you wish to calculate the disk space required for a single output data file the following formula can be used. The result is in bytes:
(4.3)
where NVAR is the number of output variables, N denotes time steps, J denotes points in the x-direction, K points in the y-direction and L points in the z-direction. NCPTS is the number of computational (water) points in the output domain. This number is normally not known prior to a simulation, but in the Bathymetry dialog, the total number of computational (water) points per time step can be seen. The power p is 1 for type 3 data files, and zero otherwise. NSKP is the number prefix records in the data file and equals zero for type 0 data files, 1 for type 1 and type 2 data files, and 5 for type 3 data files.
NHEADER is 1052 for files written in the older ctx/dtx format, and may vary slightly from 1052 for files in the dfs (Data File Standard) system.
