Presently, DaCast does not have Server Side Arching (also known as Auto Archiving). We do not automatically save and host an on demand version of past live streams for later viewing.
That said, you can use your encoder to save a local copy of your live stream. This video file can then be upload to DaCast or another video platform for your viewers to watch it.
If you want to learn more, please consult the two guides below, although any software encoder should have this feature or a similar one: