If the animation render crashes near the end, you've lost it all.  I'll second aRtBee;  render to PNGs, then compose them in an editor.  If rendering to PNGs and a render crashes, you merely pick up from the last finished frame, rather than going back to frame 1.

     If you have Poser Pro, jack all the computers you have into a router and network render the animation with Poser Pro's Queue Manager.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5