"If they wanted to hit down the ground it was into the wind. I tried to bowl a hard length and change of pace. But the change of ends definitely helped. There was a little bit of turn and I was happy enough."
Santer's figures of five for 50 are his best in ODIs and gives him an encouraging start to the tri-series, also involving Bangladesh, which leads into the Champions Trophy.
New Zealand play Bangladesh in their second game at Clontarf, near Dublin, on Wednesday night.
"They showed good signs with the bat in their rained-off game (against Ireland last week) and we know what they're capable of. We've played a lot of cricket against them recently. We know their team pretty well.
"They'll be a different challenge," he added.
Bangladesh are in the eight-team Champions Trophy, and in New Zealand's group, which makes playing them in a leadup series slightly unusual.
Then again, there aren't many secrets in the international game these days.