scenario is DP server having single drive then one more drive then configure manager uses new drive (most disk space) used for storing metadata or some other purpose i am i

Hi,

You can control that by creating an empty text file called NO_SMS_ON_DRIVE.SMS in the root of the drive that you don't want Configuration Manager to use and place the binaries for the DP before you add the Server as a Site Server and DP in Configuration Manager.

Regards,
Jrgen

Hi,

I concur with Jrgen, also you could use ContentLibraryTransfer.exe move a distribution points content store from one drive to another. 

Configuration Manager 2012 SP1 Move a Distribution Point Content Library Between Drives

http://blogs.technet.com/b/neilp/archive/2013/01/08/configuration-manager-2012-sp1-content-library-transfer.aspx