You can delete volumes on a controller to reuse that space for new volumes.
caution: All data on a volume is lost when you delete it. Make sure to back up the data before you delete a volume.
Perform the following steps to delete a volume.
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Navigate to the Controller Dashboard, click an array name (for example, Array_1).
Click the

icon that corresponds to the array to display its contents.
The volumes an drives associated with the selected array appear.
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Click the volume that you want to delete.
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Select .
A confirmation dialog appears.
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Select Confirm and click Yes, Delete to proceed with the delete operation.
Note: You can delete an operating system or file system volume. However, if you try to do so, the following message appears.
Selected Volume has an OS/FS, are you sure you want to delete it?