Extend Data Volume on a Windows Virtual Machine (VMware ESXi)

I had an issue recently with my disk space, I was running out of space so I need to add more space to the virtual Disk, 

But i was thinking if i add another new virtual disk and meagre that with the existing one i may need to shut down the server once. 

But luckily i had fee provisioned space so, I just increased the virtual disk space and then followed the steps given below,

Its worked well, but I couldn’t add the space without shutting down the server in this method.  

1.	Add Additional Space to the Virtual Hard Drive - Once connected, select your Virtual Machine from the Hosts & Clusters or VMs & Templates view. - Click "Edit Settings" - Select your Virtual Disk, and increase the Provisioned Space. - Click OK - Using the vSphere Client, connect to vCenter server or your host.
2.	Extend the Volume - Open a Command Prompt - Use the following commands from the Microsoft KB 325590 DISKPART>list volume (You'll see the volumes - note the vol number you want to expand) (Or whatever volume number you're expanding) (will extend to full amount of space available) - Access your Server (either Open Console from the vSphere Client or RDP)  c:\diskpart.exe  DISKPART>select volume 1  DISKPART>extend  DISKPART>exit