Increasing the Size of a Volume

You can increase the size (reported size) of a volume when more space is needed for data.

Note: To recognize the new volume size, hosts that are currently connected to a volume must support file system expansion. Not all operating systems, file systems, and applications support increasing the size of a volume or behave in a predictable manner when a volume size is increased. Before increasing a volume size, be sure to understand how the change affects the operating system, file system, or application using the volume.

Be sure you have sufficient free pool space before increasing the volume size.

Because reserved snapshot and replication space is based on a percentage of the volume reserve, increasing the size of a volume usually requires more snapshot and replication space. (For a standard volume, the volume reserve is the same as the reported size; for a thin-provisioned volume, the volume reserve is less than or equal to the reported size.)

For a thin-provisioned volume, increasing its size also increases the in-use warning value and maximum in-use space value (but not the percentages) because they are based on the volume size.

To increase the size of a volume, click:

Volumes > volume_name > Modify volume settings > Space tab

The Modify Volume Settings - Space dialog box appears (Figure 20: Modify Volume Settings - Space ).

Figure 20: Modify Volume Settings - Space

In the Volume size field, specify the new size. For a thin-provisioned volume, you can also modify the in-use warning value and maximum in-use space value using the slider bars.

The values in the pool space table are updated when you specify a new volume size. See Table 1: Storage Pool Space Table Values for Volumes for a description of the values and the effect of changing the volume size.

If the volume is configured for replication, a table showing the replication partner delegated space appears below the pool space table.

If the new volume size exceeds the capacity of the pool or the delegated space on the partner, the table cell showing the new space value space will turn red.

Specify the new volume size and click OK.