How to use virtual disk on your QNAP NAS

“Virtual Disk Drive (VDD) adds flexibility to storage expansion along with ease of management”


The unique “Virtual Disk Drive” adds flexibility to expand the capacity of NAS. By using the built-in iSCSI initiator, the NAS can connect to other iSCSI targets on the network and turn them into virtual disks, which become multiple single volumes on the NAS. Up to 8 virtual disks can be stacked. The NAS serves as the storage stack chaining master. The user only needs to connect to this single entry (QNAP NAS) and is able to reach and use all the iSCSI target storages on the network. This demonstration will show you how to use the virtual disk to expand your storage. Let’s get started!

VDD Architecture

Create a virtual disk

Click ‘Add Virtual Disk’ in the Virtual Disk page.

Surveillance Station usage scenario

Follow the 4 steps to connect to an iSCSI target on a remote server.

  • Enter the target server IP address (the Server which has iSCSI target on it)
  • Click “GET REMOTE DISK” to get the iSCSI target list
  • Select the iSCSI target in the Remote Disk Device that you wish to use as the virtual disk
  • Click “APPLY”

Surveillance Station usage scenario

If this is the first time when you are connecting to the virtual disk (iSCSI target), you will have to format it before it can be mounted to the NAS

Surveillance Station usage scenario

When the formatting has finished, the Status will become “Ready” and you are now able to use it.

Surveillance Station usage scenario

Use Virtual Disk on Your QNAP NAS

Now you can create the share folders on the virtual disk, simply select the VirtualDiskx ( x= 1 to 8, the max. virtual disk number is 8) in the Disk Volume dropdown list when creating a new share folder.

What online RAID migration gives you

There you go! The share folder on the virtual disk has been created successfully and is ready to be used.

What online RAID migration gives you


VN:F [1.9.22_1171]
Rating: 0.0/10 (0 votes cast)
VN:F [1.9.22_1171]
Rating: 0 (from 0 votes)

2 Responses to How to use virtual disk on your QNAP NAS

  1. Hensley Yap Foong sen says:


    how to expand the virtual disk if we should increase the size.

    Thanks for your support

  2. ike says:

    I have setup a VirtualDisk in my QNAP NAS and wish to use it to create versioning backup of local volumes/shares.
    However, I tried Backup Station and Hybrid Backup Sync, both do not allow me to choose VirtualDisk as destination !!!

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>