With Windows, it’s a simple matter of creating or expanding a VMDK and you’re a couple of clicks away from completing the task. Go to the Hard Disk section and click the Expand button. I’ve increased the allocated space in the settings but it doesn’t increase on the machine. Basically it's a two step process, where you increase the size in Parallels, but then you have to use a utility of some kind, (I used Acronis DIsk Director) to expand the disk in windows to use the extra available space. Select a virtual machine in the Virtual Machine Library window and click Settings.
A 4 KB cluster size is probably still the best choice as internally VMware tries to map the virtual sector size to the physical hard disk, so more than 4KB won’t necessarily speed this up. To help guard against virtual machines causing the host to thrash, VMware Workstation enforces a limit on the total amount of RAM that may be consumed by virtual. vmdk' Step # 3: Expand The Size Of a Virtual Disk.
Vmware fusion increase disk size windows 10 8.