518 Implementing the IBM Storwize V5000
10.4.1 Managing cluster partnerships
The Partnership window is used to manage a partnership between clusters. To access the
Partnership window, click the Copy Services function icon and then click Partnerships, as
shown in Figure 10-86.
Figure 10-86 Partnership window
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Creating a partnership
No partnership is defined in our example (see Figure 10-87), so you must create a
partnership between the IBM Storwize V5000 systems. Click New Partnership in the
Partnership window.
Figure 10-87 Create a cluster partnership
If there is no partnership candidate, an error window opens, as shown in Figure 10-88.
Figure 10-88 No candidates are available to create a partnership
Check the zoning and the system status and make sure that the clusters can see each other.
Then, you can create your partnership by selecting the appropriate remote storage system
(as shown in Figure 10-89 on page 520), and defining the available bandwidth between both
systems.
520 Implementing the IBM Storwize V5000
Figure 10-89 Select the remote IBM Storwize storage system for a new partnership
The bandwidth that you must enter here is used by the background copy process between the
clusters in the partnership. To set the background copy bandwidth optimally, make sure that
you consider all three resources (primary storage, inter-cluster link bandwidth, and auxiliary
storage) to avoid overloading them, which affects the foreground I/O latency.
Click Create and the partnership definition is complete on the first IBM Storwize V5000
system. You can find the partnership that is listed in the left pane of the Partnership window. If
you select the partnership, more information for this partnership is displayed on the right, as
shown in Figure 10-90.
Figure 10-90 Partially configured partnership
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Complete the same steps on the second storage system for the partnership to become fully
configured. The Remote Copy partnership is now implemented between the two IBM
Storwize V5000 systems and both systems are ready for further configuration of Remote
Copy relationships, as shown in Figure 10-91.
Figure 10-91 Fully configured partnership
You can also change the bandwidth setting for the partnership in the Partnerships window.
Click Apply Changes to confirm your modification.
Stopping and starting a partnership
You can stop the partnership by clicking Stop Partnership from the Actions drop-down menu,
as shown in Figure 10-92. If you stop the partnership, the relationship that uses this
partnership is disconnected.
Figure 10-92 Stop the partnership
Important: The partnership is in the “Partially Configured: Local” state because we did not
yet define it on the other IBM Storwize V5000. For more information about partnership
states, see “Remote Copy and consistency group states” on page 511.

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