You can use the Cloud Monitor agent installed on your Elastic Compute Service (ECS) instances, to collect the metric data of disks. The metrics include read operations per second, write operations per second, read bytes per second, and write bytes per second. You can configure alert rules for these metrics. If a metric triggers an alert, alert notifications are sent so that you can troubleshoot the problem in a timely manner.
Prerequisites
The Cloud Monitor agent is installed on the ECS instance that you want to monitor. For more information, see Manage a Cloud Monitor agent.
A disk is created for the ECS instance that you want to monitor. For more information, see Create an empty data disk or Create a data disk from a snapshot.
Metrics
For information about the disk metrics of ECS instances, see ECS metrics.
View the monitoring data of the disk
Log on to the Cloud Monitor console.
In the left-side navigation pane, choose .
On the Host Monitoring page, click the host name or click Monitoring Charts in the Actions column of the host.
Click the Cloud Disks tab.
On the Cloud Disks tab, you can view the disk list of the ECS instance.
Click the ID of the disk.
You can view the monitoring data of the disk, configure alert rules for the disk metrics, and view the alerting status. For more information, see Step 2: Create an alert rule for your host and Step 3: View alerts.