Performance warnings and recommendations - FSx for ONTAP
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Performance warnings and recommendations

FSx for ONTAP displays a warning for CloudWatch metrics whenever one of these metrics has approached or crossed a predetermined threshold for multiple consecutive data points. These warnings provide you with actionable recommendations that you can use to optimize your file system's performance.

Warnings are accessible in several areas of the Monitoring & performance dashboard. All active or recent Amazon FSx performance warnings and any CloudWatch alarms configured for the file system that are in an ALARM state appear in the Monitoring & performance panel in the Summary section. The warning also appears in the section of the dashboard where the metric graph is displayed.

You can create CloudWatch alarms for any of the Amazon FSx metrics. For more information, see Creating Amazon CloudWatch alarms to monitor Amazon FSx.

Use performance warnings to improve file system performance

Amazon FSx provides actionable recommendations that you can use to optimize your file system's performance. These recommendations describe how you can address a potential performance bottle neck. You can take the recommended action if you expect the activity to continue, or if it's causing an impact to your file system's performance. Depending on which metric has triggered a warning, you can resolve it by increasing either the file system's throughput capacity or storage capacity, as described in the following table.

Dashboard section If there's a warning for this metric Do this
Storage Primary storage capacity utilization

Increase your file system's primary storage capacity if your file system is not already at the maximum SSD storage capacity. For more information, see Modifying SSD storage capacity and provisioned IOPS.

If your file system has multiple HA pairs and your primary storage capacity utilization is only higher for a subset of your file system's aggregates (the storage pools that make up your primary storage tier), then you can also rebalance your workload so that your primary storage capacity utilization is more evenly spread across your file system. For more information on rebalancing your workloads, see Monitoring FSx for ONTAP workload balance.

File server performance Network throughput

Increase your file system's throughput capacity if your file system is not already at the maximum throughput capacity. For more information on updating throughput capacity, see How to modify throughput capacity.

If your file system has multiple HA pairs and utilization is high for only a subset of file servers, then you can also rebalance your workload so that your workload is more evenly utilizing the performance capabilities of each of your file system's HA pairs. For more information on rebalancing your workloads, see Monitoring FSx for ONTAP workload balance.

Disk throughput
Disk IOPS
CPU utilization
Disk performance Disk IOPS

Increase SSD IOPS if your file system is not already at the maximum SSD IOPS for your file system's current throughput capacity. For more information on updating your file system's provisioned IOPS, see Modifying SSD storage capacity and provisioned IOPS.

If your file system has multiple HA pairs and your disk IOPS utilization is only higher for a subset of your file system's aggregates (the storage pools which make up your primary storage tier), then you can also rebalance your workload so that your disk IOPS are utilized more evenly across your file system. For more information on rebalancing your workloads, see Monitoring FSx for ONTAP workload balance.

For more information about file system performance, see Amazon FSx for NetApp ONTAP performance.