Setting Virtual Memory or Page file size for SAP installation

Virtual memory in SAP installation is very important because SAP installation consume lots of memory… so it is batter to give good amount of memory..
To set Virtual Memory we normally take this formula
Initial Size = RAM x 4 times (approx.)
Max = RAM x 4 + 500 MB
Right mouse click on my computers >> Click on Property
System Property window will open
>> Click on Performance Option

>> in Virtual memory >> Click Change


>> Select the Drive on which u want to give Virtual Memory