Moving workloads to an aggregate on a different node

Contributors netapp-chikkusu

You can use Unified Manager to help identify an aggregate on a different node that is less busy than the node where your workloads are currently running, and then you can move selected volumes to that aggregate. Moving high-performing workloads to an aggregate on a less busy node allows workloads on both nodes to perform more efficiently.

What you’ll need

  • You must have the Operator, Application Administrator, or Storage Administrator role.

  • You must have recorded the name of the node that is currently having a performance issue.

  • You must have recorded the date and time at which the node received the performance event.

  • Unified Manager must have collected and analyzed a month or more of performance data.

These steps help you identify the following resources so that you can move high-performing workloads to a lower utilized node:

  • The nodes on the same cluster that are less utilized

  • The aggregates on the new node that are the least utilized

  • The highest-performing volumes on the current node

Steps
  1. Identify a node in the cluster that is the least utilized:

    1. From the Event details page, click the name of the cluster on which the node resides.

      The cluster details are displayed in the Performance/Cluster Landing page.

    2. On the Summary page, click Nodes from the Managed Objects pane.

      The list of nodes on this cluster are displayed.

    3. Click the Utilization column to sort the nodes by least utilized.

      You can also identify those nodes that have the greatest Free Capacity. This provides a list of potential nodes to which you might want to move workloads.

    4. Write down the name of the node to which you want to move the workloads.

  2. Identify an aggregate on the new node that is the least utilized:

    1. In the left navigation pane, click Storage > Aggregates and select Performance > All Aggregates from the View menu.

      The Performance: All Aggregates view is displayed.

    2. Click Filtering, select Node from the left drop-down menu, type the name of the node in the text field, and then click Apply Filter.

      The Performance: All Aggregates view is redisplayed with the list of aggregates that are available on this node.

    3. Click the Utilization column to sort the aggregates by least utilized.

      You can also identify those aggregates that have the greatest Free Capacity. This provides a list of potential aggregates to which you might want to move workloads.

    4. Write down the name of the aggregate to which you want to move the workloads.

  3. Identify the high-performing workloads from the node that received the event:

    1. Return to the Event details page for the event.

    2. In the Affected Volumes field, click the link for the number of volumes.

      The Performance: All Volumes view is displayed with a filtered list of the volumes on that node.

    3. Click the Total Capacity column to sort the volumes by the largest allocated space.

      This provides a list of potential volumes that you may want to move.

    4. Write down the names of the volumes that you want to move, and the names of the current aggregates on which they reside.

  4. Move the volumes to the aggregates you identified as having low utilization on the new node.

    You can perform the move operation by using ONTAP System Manager, OnCommand Workflow Automation, ONTAP commands, or a combination of these tools.

After a few days, check to see whether you are receiving the same type of events from this node or aggregate.