N.Y. C.P.L.R. § 4113

§ 4113. Disagreement by jury. (a) Unanimous verdict not required. A verdict may be rendered by not less than five-sixths of the jurors constituting a jury. (b) Procedure where jurors disagree. Where five-sixths of the jurors constituting a jury cannot agree after being kept together for as long as is deemed reasonable by the court, the court shall discharge the jury and direct a new trial before another jury.