2. Define the MC names to DFSMS. 

After the MC names are selected, the names must be defined to DFSMS and to the TS7700. For more information about defining the MC in DFSMS, see z/OS DFSMSdfp Storage Administration , SC23-6868. 

None of the settings are used for system-managed tape. All settings that are associated with an MC name are defined through the TS7700, not the DFSMS windows. 

3. Define the MC names to the TS7700. 

You must also define the MC names on the TS7700 because you are not using the Default MC settings for Copy Export volumes. Define a Secondary Pool for the copies to be exported. 

For more information about how to add an MC, see “Management Classes window” on page 455. 

4. Define the VOLSER ranges for the 3592 media. 

You must define the VOLSER range (or ranges) for the physical volumes to use for Copy Export if you plan to use a specific VOLSER range. Ensure that you define the same pool that you used in the MC definition as the Home Pool for this VOLSER range. 

Tip:  For the physical volumes that you use for Copy Export, defining a specific VOLSER range to be associated with a secondary pool on a source TS7700 can simplify the task of knowing the volumes to use in recovery, and of returning a volume that no longer has active data on it to the TS7700 that manages it. 

For more information about how to define the VOLSER ranges, see “Defining VOLSER ranges for physical volumes” on page 541. 

5. Define the characteristics of the physical volume pools used for Copy Export. 

For the pool or pools that you plan to use for Copy Export and that you specified in the MC definition (and optionally in the VOLSER range definition), select Copy Export in the Export Pool field. 

For more information about how to change the physical volume pool properties, see “Defining physical volume pools in the TS7700T” on page 542. 

6. Code or modify the MC automatic class selection (ACS) routine. 

Add selection logic to the MC ACS routine to assign the new MC name, or names. 

7. Activate the new construct names and ACS routines. 

Before new allocations are assigned to the new MC, the Source Control Data Set (SCDS) with the new MC definitions and ACS routines must be activated by using the SETSMS SCDS command. 

## 13.2.2 Validating before activating the Copy Export function 

Before the logical volumes are exported, you must perform several general validations. Before you start the operation, check that the TS7700 has the required physical drives and scratch physical volume resources. 

Verify that the TS7700 is not near the limit of the number of physical volumes that can have a status of Copy Exported and modify the value, if required. Depending on your production environment, you might want to automate these validation steps. 

