IBM V7000 Introduction And Implementation Manual page 284

2. Select the primary pool by clicking it and the view changes to the second pool
(Figure 6-11).
Figure 6-11 Create a mirrored volume - Select the secondary pool
3. Select the secondary pool by clicking it, and enter a volume name and the required size
(Figure 6-12).
Figure 6-12 Create a mirrored volume - Select pools, name, and size
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IBM Flex System V7000 Storage Node Introduction and Implementation Guide