Which type of metric is typically measured by "system.disk.used"?

The metric "system.disk.used" is classified as a standard metric because it represents a common and widely utilized measure pertaining to the system's storage utilization. Standard metrics are predefined measurements that Datadog collects out of the box, specifically those that monitor the health and performance of the infrastructure.

In the case of "system.disk.used," it specifically tracks the amount of disk space that is currently in use on a system. This is vital for system administrators to understand resource utilization and to ensure that the disk capacity is not reaching critical levels, which can affect performance and lead to system failures.

Custom metrics, on the other hand, are user-defined and can capture specific data points tailored to an organization’s needs, which is different from standard metrics that are included by default. Network metrics typically pertain to data related to network performance, such as bandwidth and latency, while application metrics focus specifically on the performance and behavior of software applications. Therefore, regarding the measurement of disk usage, "system.disk.used" aligns with the characteristics of a standard metric.