Homebase recordings ending every day at the same time

I have four cameras (E330), and a doorbell (E340), connected in to my Homebase 3. I have a 1Tb SSD drive installed in the Homebase. I have it set to continuously record on all cameras, and have had no trouble until recently. I've noticed for the last few days they all stop having video available for playback from around 5:47pm each day. They reset and start recording again at midnight, until around the same time again the next day. I've noticed that each camera has a slight variance on the termination time, some are 5:48pm or 5:49pm.

Does anyone have any idea what this could be, or what I can do/try to help? I've restarted the Homebase, but don't really want to format/reset if that doesn't help, and I may need previous footage.

Many thanks!