Adding consistency groups (add ct group), Figure 40 add ct group pane, 40 add ct group pane – HP XP Continuous Access Software User Manual
Page 68: Adding consistency, Groups (add ct group)
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Continuous Access XP for the XP1024/XP128
Adding consistency groups (Add CT Group)
Use the Add CT Group command to add a consistency group to the connected MCU. When the Add CT
Group command is selected, the Add CT Group pane appears. Use the Add CT Group pane to select
group options for the group.
Figure 40
Add CT Group pane
•
MCU-RCU Path: Path type for remote copy connections.
•
Time Out (Copy Pending) (min.): Maximum delay allowed for Continuous Access XP Async copy (none
or from 1 to 15 minutes; none = no timeout for Continuous Access XP Async copy pending). The
default is five minutes. If the delay between the Continuous Access XP Async P-VOL update and
corresponding S-VOL update reaches the specified time, the RCU suspends all S-VOLs in the group. A
timeout occurs when the RCU cannot settle a recordset within the specified time or has not had any
communications from one of the MCUs in the group within the specified time.
NOTE:
The copy pending timeout value should be less than the I/O timeout value of the host
system.
•
Time Out (RCU ready) (min.): Maximum delay allowed for re-establishing MCU-RCU communications
following MCU power-off (none or from 1 to 10 minutes; none = no timeout for Continuous Access XP
Async RCU ready). The default is five minutes. If the MCU cannot re-establish communications with the
RCU within the specified time, the MCU suspends all P-VOLs in the group.
•
Cancel button: Cancels settings.
•
Set button: Sets consistency group options.
1.
Connect to the MCU.
2.
Ensure that async options are configured as needed (see ”
3.
From the Consistency Group tree, click a consistency group mode that includes the consistency group
to be added.
4.
From the Consistency Group list, click the consistency groups to add. Select more than one group that
is not registered yet.
5.
Right-click, click CT Group Operation, and click Add CT Group. The Add CT Group pane appears.
6.
From the Add CT Group pane, click the port type (fibre) and group options: copy pending timeout and
RCU ready timeout. Remember that you cannot modify the port type of the group after assigning a
pair to the group.
7.
Click Set in the Add CT Group pane. The Add CT Group pane closes, and the list changes to the
Consistency Group Settings Parameter list.