This screenshot shows the Create ASM Volume page in Oracle Enterprise Manager.

There is an entry field for volume name and size. To the right of the size entry field there is a pull-down list for units associated with the size value.

A pull-down list enables you to select the redundancy for the volume.

Under the Regions section of the page, you can specify the region setting for the primary and mirror extents, either hot or cold.

There are buttons that perform Show Command, Cancel, or OK (finish).