HP StorageWorks XP Remote Web Console Software - Manual (Page 108)

108 Hitachi TrueCopy z/OS for HP XP12000/XP10000 and SVS 200 storage systems
The Delete CT Group command deletes the selected group from the current MCU. You cannot delete a
group that still has M-VOLs in the current MCU.
To delete a consistency group from an MCU:
1. Connect to the MCU.
2. From the Consistency Group tree, select a consistency group mode that includes the consistency group
you want to delete.
3. From the Consistency Group list, select the consistency group(s) to delete. Make sure to select more than
one consistency group whose This CU column indicates MCU.
4. Right-click to display the pop-up menu, click CT Group Operation, and then click Delete CT Group. The
list changes to the Consistency Group Settings Parameter list. If the Delete CT Group command is not
enabled, the selected group still contains M-VOLs in this MCU.
NOTE: The options can be modified and/or canceled after you have set them. See ” Modifying
parameters and omitting consistency groups ” on page 109.
5. Click Apply in the TrueCopy main window to apply the deletion to the disk array.
Asynchronous copy option
Use the Async Option command to select the parameters for the TC390A copy operation. When the Async
Option command is selected, the Async Option window is displayed. Use the Async Option window to
specify the TC390A copy option parameters for the connected disk array. The async options apply to the
entire physical control unit, including all TC390 M-VOLs and R-VOLs behind the control unit. The async
options can be modified only when no TC390A pairs or groups exist in the connected CU (M-VOLs or
R-VOLs).
Figure 58 Async Option window
All the default settings indicate the current settings.
The CLPR(#) list specifies CLPR ID. The default setting is 00.
Use the Pending Update Data Rate (%) box to specify the TC390A (and XP Continuous Access
Asynchronous) sidefile threshold that is the maximum amount of cache that can be used for storing TC390
(and XP Continuous Access) Async recordsets (sidefiles). You can select any value between 30% and 70%
(10% increments) (see ” Inflow control of recordsets ” on page 31). The current pending update data rate is
common to both TC390 and XP Continuous Access operations. The most recently entered value (on the
TrueCopy or XP Continuous Access Async Option window) will be applied to TC390A and XP Continuous
Access Asynchronous operations. When the amount of cache being used for TC390A and XP Continuous
Access Asynchronous recordsets reaches the specified threshold value, the MCU/RCU performs cache
inflow control as follows: