[ubuntu] virtual ubuntu storage server

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http://ubuntuforums.org – I would like to use ubuntu server 12.04 to create a file server for my media and pc backups. In the future I plan to build a new machine using the amd A series or intel atom for low power usage. Until I can afford to build the new machine I was thinking of running the ubuntu server as a virtual machine. The vm will be running in vmware workstation on a windows host. My question is will I have any trouble using the VM to create a large storage pool using ext4 file system (4TB - 2x2tb drives) and creating samba shares? Is the windows host going to see the drives or can I make them only (Hardware)