Batch - Network analysis using Arcmap and NA extension

I faced a problem in performing batch process for 50k pairs of addresses (lat.long), to find the driving distance.   I have got a good input for this task,

http://forums.arcgis.com/threads/12128-add-origin-amp-destination-locations-from-the-same-row-to-a-route-analysis-layer?highlight=routename

The above forum link explains how to achieve bulk process in a single click.....

I tried with 50k address sets, ArcMap is able to do process without any issue.