How to create a RAM Drive (RAM Disk) in Windows 2008 R2?
We've got an old version of the StarWind iSCSI Target software that works in 2008 R2 and can create RAM disks. It's not free, and it comes with an iSCSI wrapper, but it still works.
ImDisk is a virtual disk driver for Windows NT/2000/XP/Vista/7/8 or Windows Server 2003/2008/2012
http://www.ltr-data.se/opencode.html/#ImDisk
Current version 1.8.0 built 01 May 2014