About Haeundae Train Station

Hello, I want to know how many Haeundae Train Stations are there?

I am willing to take train from Gyeongju train station (NOT the New Gyeongju train station) to Haeundae Train Station. However, I found there are two Haeundae Train Stations in Korean -- 구・해운대역 (this one is together with Haeundae subway station) and 해운대역 (this one is pretty far away from Haeundae subway station). I want to know which one the train will stop at?

is it convenient to go to 해동용궁사 and 해운대 달맞이길 from the train station?

Is there a luggage storage at Haeundae Train Station?

The coastal track is no longer in use. You'll get off at that 'far away' new Haeundae station.