Delete External Volumes window

Item	Description
Parity Group ID	Parity group numbers.
Top LDEV ID	External volume's top LDEV ID.
Top LDEV Name	External volume's top LDEV name.
Attribute	External volume's attribute.
Have you already disconnected the external volume of the above table?	Yes: Select if you have disconnected the external volume you want to delete. This is the default. No: Select if you have not disconnected the external volume you want to delete.
Do you want to execute the Delete External Volumes operation without writing the cache data to the volumes?	Yes: For deleting the external volumes without writing the data in cache memory into the volumes. No: If selected, the operation cannot be completed. This is the default.