Adding tiers by using the All Shared Storage Pool Clusters menu
With HMC version 8.40 or later, if you are using an HMC Enhanced+ interface, you can add a tier to a Shared Storage Pool (SSP) clusters by using the All Shared Storage Pool Clusters menu in the Hardware Management Console (HMC).
- In the navigation pane, click the Resources icon
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To add a tier to a Shared Storage Pool cluster, by using the HMC, complete the following steps:
- Click All Shared Storage Pool Clusters. The All Shared Storage Pool Clusters table is displayed. The table lists all clusters that can be accessed by the HMC (all servers managed by the HMC).
- Select a Shared Storage Pool cluster from the table and click . Alternatively, you can add a tier from the cluster configuration page by clicking Add Tier. The Add Tier page opens.
- Enter a tier name in the Tier Name field.
- Enter the free threshold percentage and the overcommit threshold percentage in the Free Threshold % field and the Overcommit Threshold % field.
- Select Mirroring and enter the names of the Failure group 1 and Failure group 2. Mirroring enables you to assign physical volumes to the failure group 1 and failure group 2 that are contained by the tiers. The same data is replicated in both the failure groups. If you enable mirroring you can retrieve data when the data is lost from one failure group. To enable mirroring, you must assign the physical volumes in the table to the failure groups.
- In the Physical Volumes table, assign Failure group 1 and Failure group 2 to the required physical volumes to add storage capacity.
- Click OK. A tier is added to the selected Shared Storage Pool cluster.
