Modify the size of consistency groups on your ASA r2 system
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Increase or decrease the size of a consistency group by modifying the number of storage units in the consistency group.
Add storage units to a consistency group
Expand the amount of storage managed by a consistency group by adding storage units to the consistency group.
You can add existing storage units to your consistency group or you can create new storage units to add to the consistency group.
If you are running ONTAP 9.16.1 and the consistency group you want to expand is in an SnapMirror active sync relationship, you must delete the SnapMirror active sync relationship before you can add storage units. If you are running ONTAP 9.16.1 and the consistency group is in an asynchronous replication relationship, you must break the relationship before you can expand the consistency group. Deleting the SnapMirror active sync relationship or breaking the asynchronous relationship before expanding a consistency group is not required in ONTAP 9.17.1 and later releases.
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In System Manager, select Protection > Consistency groups.
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Hover over the consistency group you want to expand.
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Select
; then select Expand. -
Select Using existing storage units.
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Select the storage units to add to the consistency group; then select Expand.
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In System Manager, select Protection > Consistency groups.
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Hover over the consistency group you want to expand.
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Select
; then select Expand. -
Select Using new storage units.
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Enter the number of units you want to create and the capacity per unit.
If you create more that one unit, each unit is created with the same capacity and the same host operating system. To assign a different capacity to each unit, select Add a different capacity to assign a different capacity to each unit.
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Select Expand.
After you create a new storage unit, you should add host initiators and map the newly created storage unit to a host. Adding host initiators makes hosts eligible to access the storage units and perform data operations. Mapping a storage unit to a hosts allows the storage unit to begin serving data to the host it is mapped to.
Existing snapshots of the consistency group won't include your newly added storage units. You should create an immediate snapshot of your consistency group to protect your newly added storage units until the next scheduled snapshot is automatically created.
Remove a storage unit from a consistency group
You should remove a storage unit from a consistency group if you want to delete the storage unit, if you want manage it as part of a different consistency group, or if you no longer need to protect the data it contains. Removing a storage unit from a consistency group breaks the relationship between the storage unit and the consistency group, but does not delete the storage unit.
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In System Manager, select Protection > Consistency groups.
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Double-click the consistency group from which you want to remove a storage unit.
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In the Overview section, under Storage units, select the storage unit you want to remove; then select Remove from consistency group.
The storage unit is no longer a member of the consistency group.
If you need to continue data protection for the storage unit, add the storage unit to another consistency group.