‘Optimization’ has two functions :

Optimization’ pre-tests whether the newly added HDD is appropriate for recording.

(+ set Buffer size, # of camera, etc)

If the result is pass, the newly HDD is appropriate for recording.

For example, if you set 32 cameras for optimization and it passes the pre-test, the HDD guarantees 32 recordings.
However, it doesn’t guarantee over 32 cameras. It may be possible or not.

 

If you set 48 channels for optimization and it passes, the HDD guarantees upto 48 cameras, so you can add 16 more cameras whenever you want.