Shred LDEVs window

Use the Shred LDEVs window to select the volumes (LDEVs) to be shredded, configure the shredding operations (number of overwrite passes, data patterns), and enable/disable the output of shredding results to files.

Selected LDEVs table in the Shred LDEVs window

Item	Description
LDEV ID	ID of the selected LDEV. The ID is a combination of the logical disk controller (LDKC) number, control unit (CU) number, and LDEV number.
LDEV Name	Name of the selected LDEV.
Parity Group ID	Parity group number (for example, 1-1) of the selected LDEV. A parity group number starting with E (for example, E1-1) indicates that the parity group contains one or more external volumes. A parity group number starting with X (for example, X1-1) indicates that the parity group contains one or more Dynamic Provisioning virtual volumes.
Pool Name(ID)	Pool volume (pool-VOL) name and ID.
Capacity	Capacity of the selected LDEV. To change the capacity unit, select Option Capacity Unit.
Provisioning Type	Provisioning type of the selected LDEV: Basic: Internal volume External: External volume DP: Virtual volume of Dynamic Provisioning
Attribute	The following LDEV attributes are displayed: Command device: The volume has the command device attribute. SLU: The volume has the SLU attribute. Data Direct Mapping: The volume has the data direct map attribute. (-): The volume does not have an attribute.
Data Output	YES: The results of the shredding operation will be saved in a file. NO: The results of the shredding operation will be not saved in a file.
Set Data Output	If this button is selected, Yes appears in the Data Output column. If the data output setting is enabled, the results of the shredding operation will be saved in a file. Results can be saved for up to three volumes.
Cancel Data Output	If this button is selected, No appears in the Data Output column. If the data output setting is disabled, the results of the shredding operation will be not saved in a file.

Shredding Data Pattern table in the Shred LDEVs window

Item	Description
Pass Number	Order of the overwrite pass.
Data Pattern	Dummy data pattern for the overwrite pass.
Edit Data Pattern	Click to open the Edit Shredding Data Pattern dialog box, which allows you to change the data pattern setting.