VM created with option Create New Volume No

During creation of a VM you can select a source. If you choose Image, you can then choose Yes or No for the option “Create New Volume”.

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By default No is selected:

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The new Virtual Machine will be created with the System Volume (Root Disk) size as defined in the flavor.

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If you want to select a different size for the System Volume (Root Disk) please read article VM created with option create new volume Yes

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In contrast to a VM created when choosing Yes, when choosing No the system disk is “ephemeral” and will not be visible in the Volumes view.

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