Skip to main content
NetApp Knowledge Base

Can volume autosize be used with ONTAP FlexGroup volumes

  1. Last updated
  2. Save as PDF
Views:
65
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

ONTAP 9

Answer

Yes,volume autosize can be used with ONTAP FlexGroup volumes.

Additional Information

  • Elastic sizing and volume autosize serve different purposes.
    • Elastic sizing:
      • Redistributes free space across constituents within the same FlexGroup to prevent constituent-full conditions.
      • Does not increase the FlexGroup’s total provisioned size.
    • Volume autosize: Increases the total provisioned size of the FlexGroup when usage crosses a threshold.
  • Enabling autosize grow is appropriate when:
    • The FlexGroup is expected to exceed its current provisioned size.
    • Aggregates provide sufficient free space headroom to accommodate growth.
  • Best practice configuration for FlexGroup autosize:
    • Use grow mode only.
    • Set an explicit maximum size cap.
    • Ensure the autosize grow threshold is lower than the elastic sizing threshold to avoid contention.
    • Validate thresholds per KB Flexgroup constituent full due to the same autosize and elastic size thresholds.
  • How far autosize grows without explicit max/min:

If maximum is not set, ONTAP applies a default maximum (commonly 120% of the original configured volume size).

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.