Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

Performing TrueCopy for z/OS Configuration Operations 5-41
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
Deleting Consistency Groups
A consistency group can be deleted only from the MCU and only if the MCU
does not contain any M-VOLs still assigned to the group. Deleting a
consistency group from an MCU does not affect the consistency groups
registered at other MCUs. The RCU will automatically delete a consistency
group when the last pair in the group is released.
The CT Group OperationÆDelete CT Group command allows you to delete
a group from the current MCU. The MCU will not allow you to delete a group
which still has M-VOLs in the current MCU.
To delete one or more consistency groups from an MCU:
1. Make sure that all affected TrueCopy for z/OS Async pairs have been
released.
2. Select the LDKC where the desired consistency group belongs, or select Used
from the tree in the Asynchronous Operation tab to display the existing
consistency groups in the list.
3. Select the consistency group(s) that you want to delete. You can only delete
consistency groups from the MCU (This CU Type = MCU).
4. Right-click the RCU, click CT Group Operation, and then click Delete CT
Group. The preview list displays the requested consistency group. If the Delete CT
Group command is not enabled, one of the groups still contains M-VOLs in
this MCU. The preview list displays the requested delete group operation(s).
5. Verify the requested operation(s) displayed in the preview list. To remove
one or more delete CT group operations, select the operation(s), right-click,
and click Delete. To cancel all operations, select all the operations in the
preview list, right-click, and click the Delete command, or click the Cancel
button.
6. To delete the group(s), click Apply.