How to add a virtual disk into a 'guest VM' after VM has been created?

Question

Well, it was easy when one need to add a virtual disk before creating a guest VM. All need to do was to edit the template and click on disk tab and create a virtual disk.
However the challenge comes after created a 'guest VM'. I need to add additional virtual disk into this 'guest VM'.
This is what I did.
Click on Repositories tab --> Under repositories--> Virtual Disks. There is a green "+" sign. Click on it. It says create virtual disk. Follow the instruction, I enter the virtual disk name, size, and select if it is spare or non-spare. Hit ok. Well, everythings seems fine.
Next, I click on the "blue folder" icon which indicated import virtual disk. It asked me about Virtual disk download location.
According to the manual, http://docs.oracle.com/cd/E27300_01/E27309/html/vmusg-repo.html#vmusg-repo-vdisk
Virtual Disk download location: The URL for the virtual disk file. The URL protocols supported are HTTP, HTTPS, and FTP. For example:http://example.com/vdisks/myvdisk.img
How can I determine what is the URL in my case?
Where is the newly created virtual disk located? Isn't it supposed to be in Oracle Server? But it doesn't have  a http server running there.
Please help.
Thank you.

Answer 1

Virtual disks can only be added and removed at runtime from a PVM. You don't even need to know anything special. Just create the vdisk and use the VMs settings to occupy another slot with the new vdisk.
But as I said… this works only with PVMs, not HVMs. In case of a HVM, you will need to shut down the VM and add the disk afterwards, then fire it back up.
The little folder with the blue down arrow is for importing an existing vdisk file from a web- or ftp server. If you have already created the vdisk, you won't need that.