We are deploying physical windows servers (460c/Gen8/128GB RAM/300GB HDD) if I implement the page file, following the best practice of 1.5 times the ram, its going to take up the complete disk almost, so with such a large amount of RAM will it be necessary to have a page file that follows the normal windows way.
There are a few things to consider here.
So now you have to ask yourself:
Do you care about a full crash dump? No, probably not. Minidumps are fine in almost all cases and very few people take the time to actually analyze or understand crash dumps.
Can you forecast memory utilization in your system? If you can, you can estimate how large to set the pagefile to with some extra space built in as a cushion. I'm guessing that if you could do this, you wouldn't have asked this question.
Is the answer to the previous two questions "no"? If so, just go with System Managed and keep an eye on it, because you'll get yourself in trouble otherwise.
the short answer is: no, such a big swap file is not needed.
Just to clear up the various "Rules of Thumbs" here they are in summary:
Note: anywhere I say 1x RAM, I actually mean 1x RAM + 260MB. See KB2860880 for details
For Server 2000 and 2003:
For Server 2008 and 2008 R2:
For Server 2012 and 2012 R2: