NetApp
Vserver : Storage > Volumes : Understanding volumes : How Data ONTAP can automatically provide more space for full FlexVol volumes
How Data ONTAP can automatically provide more space for full FlexVol volumes
Data ONTAP uses two methods for automatically providing more space for a FlexVol volume when that volume is nearly full: allowing the volume size to increase, and deleting Snapshot copies (with any associated storage object). If you enable both of these methods, you can specify which method Data ONTAP should try first.
Data ONTAP can automatically provide more free space for the volume by using one of the following methods:
•
Increase the size of the volume when it is nearly full (known as the autogrow feature).
This method is useful if the volume's containing aggregate has enough space to support a larger volume. You can configure Data ONTAP to increase the size in increments and set a maximum size for the volume. The increase is automatically triggered based on the amount of data being written to the volume in relation to the current amount of used space and any thresholds set.
•
Delete Snapshot copies when the volume is nearly full.
For example, you can configure Data ONTAP to automatically delete Snapshot copies that are not linked to Snapshot copies in cloned volumes or LUNs, or you can define which Snapshot copies you want Data ONTAP to delete first—your oldest or newest Snapshot copies. You can also determine when Data ONTAP should begin deleting Snapshot copies—for example, when the volume is nearly full or when the volume’s Snapshot reserve is nearly full.
If you enable both of these methods, you can specify which method Data ONTAP tries first when a volume is nearly full. If the first method does not provide sufficient additional space to the volume, Data ONTAP tries the other method next. By default, Data ONTAP tries to increase the size of the volume first.

Was this topic helpful? Send comments to NetApp.