5. Assign mirror IDs to remote command devices as follows.
• On primary site:
- Assign mirror ID 00 to the remote command device that is mapped to on the intermediate
site.
- Assign the mirror ID used for the Continuous Access Journal 3DC multitarget pair to the
remote command device that is mapped to on the remote site.
• On the intermediate site:
- Assign mirror ID 00 to the remote command device that is mapped to on the primary
site.
- Assign the mirror ID used for the Continuous Access Journal delta resync pair to the
remote command device that is mapped to on the remote site.
• On the remote site:
- Assign the mirror ID used for the Continuous Access Journal 3DC multitarget configuration
to the remote command device that is mapped to on the primary site.
- Assign the mirror ID used for the Continuous Access Journal delta resync pair to the
remote command device that is mapped to on the intermediate site.
When selecting mirror IDs and remote command devices, observe the following:
• Though two mirrors can be assigned to each remote command device, it is not required.
Select Not set in the Mirror 2 list if you are assigning only one mirror ID.
• The same mirror ID cannot be specified from both Mirror ID lists.
• If you will not use a remote command device, select Not use in the second (lower) Remote
Command Device list.
6. Click Set.
7. See the Preview list to check the settings that you have made.
• If you want to modify an item, select and right click the setting in the Preview list and then
select Modify.
• If you want to cancel an item, select and right click the setting and then select Cancel.
8. Click Apply to assign a remote command device to a mirror. If an error occurs, right-click the
item on the Preview list, select Error Detail.
Check the list in the Journal Operation window. If the remote command device is assigned,
the LDEV number is displayed in the column of the remote command device.
You can release a remote command device by selecting Journal > Release R-Cmd. Dev when you
right-click the mirror.
Release a remote command device which is assigned to a mirror
Prerequisites
To release a remote command device which is assigned to a mirror, perform this operation per
mirror.
Delta resync configuration 143
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