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Setting alarm thresholds in VASA Provider for ONTAP

VASA Provider for ONTAP enables you to set alarms to notify you when volume thresholds and aggregate thresholds reach certain limits.

You must have registered your VASA Provider instance with Virtual Storage Console for VMware vSphere (VSC).

Aggregate-level alarms affect all of the volumes in an aggregate. Volume-level alarms affect all of the LUNs in a volume.

VASA Provider displays a yellow alarm when a volume or an aggregate reaches the Nearly full threshold limit and a red alarm when a volume or an aggregate reaches the Full threshold limit. The default values for the threshold alarms are 80 percent for Nearly full and 90 percent for Full.

If FlexVol volumes are part of VVol datastores, then an object storage alarm is raised. You can view the list of FlexVol volumes that are part of VVol datastores in the description of the alarm.

If you are using space reservations, VASA Provider does not display an alarm, even if an aggregate is 99-percent full. VASA Provider displays alarms only when a volume is at a specified threshold limit and cannot expand its capacity; space reservations enable volumes to expand.

You can view the alarms that are raised by VASA Provider for NFS datastores or VMFS datastores and the description of the alarms in your vCenter Server instance by navigating to the required datastore, and then accessing Tasks & Events on the Monitor tab. If you have enabled linked mode support for your vCenter Servers, then you can view and configure alarm thresholds for a specific vCenter Server from the other vCenter Server instances that are in linked mode.

Threshold alarms take precedence over alarms that notify you about noncompliance between datastores and profiles. If there is a yellow threshold alarm or a red threshold alarm, VASA Provider does not report noncompliance issues for any associated datastores.

You cannot provision virtual machines on a traditional datastore that displays a red alarm.

  1. From the Virtual Storage Console Home page, click VASA Provider for ONTAP to go to the VASA Provider section of the VSC GUI.
  2. Select Settings.
  3. Select the vCenter Server for which you want to set alarm thresholds.
  4. Specify the percent values for the Nearly full threshold (%) field and the Full threshold (%) field for both the volume alarm thresholds and the aggregate alarm thresholds.
    While setting the values, you must keep the following information in mind:
    • Clicking Reset resets the thresholds to the previous values.

      Clicking Reset does not reset the thresholds to the default values of 80 percent for Nearly full and 90 percent for Full.

    • There are two ways to set the values:
      • You can use the up and down arrows next to the values to adjust the threshold values.
      • You can slide the arrows on the track bar below the values to adjust the threshold values.
    • The lowest value that you can set for the Full threshold (%) field for volumes and aggregates is 6 percent.
  5. After specifying the required values, click Apply.
    You must click Apply for both the volume alarm and the aggregate alarm.