You use the Decrease Capacity option to decrease the reserved capacity for the following storage objects: snapshot group, snapshot volume, and consistency group member volume. You can decrease reserved capacity only by the amount(s) you used to increase it.
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The storage object must contain more than one reserved capacity volume.
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The storage object must not be a mirrored pair volume.
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If the storage object is a snapshot volume, then it must be a disabled snapshot volume.
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If the storage object is a snapshot group, then it must not contain any associated snapshot images.
Review the following guidelines:
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You can remove reserved capacity volumes only in the reverse order that they were added.
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You cannot decrease the reserved capacity for a snapshot volume that is read-only because it does not have any associated reserved capacity. Only snapshot volumes that are read-write require reserved capacity.
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Select .
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Click the Reserved Capacity tab.
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Select the storage object for which you want to decrease reserved capacity, and then click Decrease Capacity.
The Decrease Reserved Capacity dialog box appears.
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Select the capacity amount by which you want to decrease reserved capacity, and then click Decrease.
System Manager performs the following actions:
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Updates the capacity for the storage object.
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Displays the newly updated reserved capacity for the storage object.
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When you decrease capacity for a snapshot volume, System Manager automatically transitions the snapshot volume to a Disabled state. Disabled means that the snapshot volume is not currently associated with a snapshot image, and therefore, cannot be assigned to a host for I/O.