ONTAP 9 Manuals ( CA08871-402 )

Sufficient space must be available in the aggregates.

If you want to add more space, you can increase the collective size of the FlexGroup volume. Increasing the size of a FlexGroup volume resizes the existing constituents of the FlexGroup volume.

If you want to improve performance, you can expand the FlexGroup volume. You might want to expand a FlexGroup volume and add new constituents in the following situations:

You can expand FlexGroup volumes that are in a SnapMirror relationship.

Whenever possible, you should increase the capacity of a FlexGroup volume. If you must expand a FlexGroup volume, you should add constituents in the same multiples as the constituents of the existing FlexGroup volume to ensure consistent performance. For example, if the existing FlexGroup volume has 16 constituents with eight constituents per node, you can expand the existing FlexGroup volume by 8 or 16 constituents.

Example of increasing the capacity of the existing constituents

The following example shows how to add 20 TB space to a FlexGroup volume volX:

If the FlexGroup volume has 16 constituents, the space of each constituent is increased by 1.25 TB.

Example of improving performance by adding new constituents

The following example shows how to add two more constituents to the FlexGroup volume volX:

The size of the new constituents is the same as that of the existing constituents.