Hitachi ShadowImage for IBM z/OS User"s Guide (T5213-96002, June 2007)

Performing ShadowImage for z/OS Operations Using Storage Navigator 5-23
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
The T-VOL will be displayed below the selected S-VOL in the Split
Volume Pair Volume List.
f. If you want to add and split another T-VOL to and from the same S-
VOL, repeat steps b through e. Each pair to be added and split will be
displayed separately in the Volume List.
6. Repeat step 5 until the desired pair(s) is/are displayed.
Note: Use the Change button to replace T-VOLs, the Set button to add T-
VOLs, and the Delete command in the pop-up menu to remove pairs from
the Split Volume Pair Volume List.
7. Click OK to reflect the settings in the Split Volume Pair dialog box to the
Preview List on the Pair Operation window.
8. On the Pair Operation window, click Apply to apply the operation settings
in the Preview List to the storage system.
The pair(s) will then be created and split according to the operations set in
the Split Volume Pair dialog box. When the add & split operation(s) start,
the Pair Operation window will show the new pairs with SP-Pend or V-Split
status and the progress (%) of the ongoing update copy operation(s). The
Split status will be displayed right away if there were no pending update
copy operations.
Performing At-Time Split Operation (Multiple Pair Splitting)
By using Business Continuity Manager, you can split the multiple SIz pairs in
the same consistency group at once. For details on adding, deleting and
viewing the SIz
consistency groups, see section Configuring Consistency
Groups. SIz consistency groups have the following restrictions:
Table 5-3 Specifications of Consistency Groups
Items Descriptions
Consistency group
number
A number (0–127) is assigned to each consistency group. You can specify a
consistency group number when you create SIz pairs. You can view the ID of the
consistency groups used as the pair unit via the CTG window or by using a mainframe
host.
You can configure up to 128 consistency groups in a storage system, including the
ShadowImage
consistency groups.
Number of pairs
You can define up to 8,192 SIz pairs in a consistency group. Note that the SIz pairs
and the ShadowImage pairs cannot co-exist in the same consistency group.
This section describes the overview procedure of splitting pairs by At-Time
Split, using Business Continuity Manager. For detailed instructions on using
Business Continuity Manager, please refer to the Business Continuity Manager
User and Reference Guide.
1. Define the SIz pairs in the same consistency group.
2. Specify the consistency group as the copy group of Business Continuity
Manager, or register the split time.