Hi Phani
1. During the installation time it will create the share folder (global, profiles & SAP log )
2. In windows environment nothing is much more require. basic windows settings
3.Kindly follow the installation steps
3.1. Start install the Global host on VM1 (It will create the Profile,Global Share and local group creation )
3.2. Install the DB installation on VM2 (its will as for the Profile Folder share you have to mention the Share on VM1)
3.3 Installation of DI on VM1 (Standard Dialog instance installation during this process its will check the DB instance )
Kindly refer the Link(Required S user id) https://websmp101.sap-ag.de/~form/handler?_APP=00200682500000002672&_EVENT=DISPLAY&_SCENARIO=&_HIER_KEY=501100035870000015092&_HIER_KEY=601100035870000179415&_HIER_KEY=601100035870000193528&_HIER_KEY=701100035871000427784&
Regards
Sriram