Despite stamping their credentials as NRL premiership contenders with a crushing qualifying final win, Melbourne forward Bryan Norrie believes they need to step up if they are to take the title.

The Storm steamrolled their way straight to a preliminary final berth with a 24-6 victory over Souths and now await either Manly or North Queensland next Friday night at AAMI Park.

Despite the strong showing, Norrie said the team didn't think it was good enough for them to go all the way.

"It probably isn't (good enough)," he said on Friday.

"You've got to step up every week.

"It was a great start to the finals series and we were happy with that but we've got to keep improving if we want to go somewhere."

The Storm were surprisingly eliminated last year in the preliminary final at the hands of the Warriors and were doing all they could to avoid another defeat a week before the grand final.

"Everyone's full of confidence but it's finals, anything can happen," Norrie said.

"We haven't talked about last year ... everyone's just focusing on this year and doing everything possible to make sure it doesn't happen again."

Coach Craig Bellamy put his troops through a tough training session that simulated a game on Thursday but they will have the weekend off.

The Storm are hoping to have a full complement of players to select from, including injured forwards Jason Ryles and Todd Lowrie.

Melbourne's attack was at its rampant best against the Rabbitohs but Norrie said their focus was on defence.

"During the week we concentrated on some things that we wanted to fix up from the last game," Norrie said.

"We were happy with how we played but there's always room for improvement."

- AAP