WinDRBD
WinDRBD® is the port of the virtual block device driver, DRBD®, to Microsoft Windows. You can use WinDRBD to replicate storage data between hosts in Windows clusters or mixed Linux and Windows clusters.
Differences Between WinDRBD 1.x Branches
Differences Between WinDRBD and Linux DRBD
Preparing a WinDRBD Disk by Using PowerShell