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Resizing a disk

You can resize a disk using the SnapDrive for Windows MMC snap-in to either increase or decrease the amount of space it uses.

Before you begin

Take a Snapshot copy of your disk before you resize it. If necessary, you can use the Snapshot copy to restore the disk to its original size.

About this task

If the disk you want to resize is a quorum disk in a Microsoft cluster configuration, instead of performing the following steps, you need to follow the procedure to resize a quorum disk.

Steps

  1. Under SnapDrive in the left MMC pane, expand the instance of SnapDrive you want to manage, then expand Disks and select the disk you want to manage.
  2. From the menu choices at the top of MMC, navigate to Action > Resize Disk.
  3. Next to "Maximum size" in the Resize Disk window, leave "Reserve space for at least one Snapshot copy" selected.

    Note: When you select this option, the disk size limits displayed are accurate only when they first appear on the Select LUN Properties panel.

  4. In the "New size" box, either type a value, or use the slider bar to increase or decrease the amount of space the disk uses.
  5. Select the "Take a Snapshot before resizing the lun" check box, to take a Snapshot copy before you resize your disk.
  6. Click OK.
  7. Create a new Snapshot copy of the resized disk.

After you finish

If you change the size of your disk, you might need to close and reopen MMC before the resized disk size becomes visible in the Disk Management snap-in.