How to get for each step a separate odb-file?

How to get for each step a separate odb-file? There is a *FREQUENCY step and severial *STEADY STATE DYNAMICS in my inp-file. the odb file should be hundrads of GB (maybe 500GB), we will get in trouble with too big odb files. I think it should work to get for each step a separate odb-file but I am not sure how.