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Cloud Config:Idle disk check for ECS instances

Last Updated:Oct 20, 2025

An ECS disk is considered compliant if its maximum disk usage within a specified period is greater than or equal to a specified value. If an ECS instance is not connected to Cloud Monitor, the check is not applicable to the instance. The default check period is the last 7 days. The check uses the Cloud Monitor API to retrieve monitoring data and consumes the free quota for basic monitoring. To ensure the quality of the check, enable Hybrid Cloud Monitoring. For more information about billing for Hybrid Cloud Monitoring, see Billing of Cloud Monitor.

Risk level

Default risk level: Low.

You can change the risk level as needed.

Detection logic

  • An ECS disk is considered compliant if its maximum disk usage within a specified period is greater than or equal to a specified value. If an ECS instance is not connected to Cloud Monitor, the check is not applicable to the instance. The default check period is the last 7 days. The check uses the Cloud Monitor API to retrieve monitoring data and consumes the free quota for basic monitoring. To ensure the quality of the check, enable Hybrid Cloud Monitoring. For more information about billing for Hybrid Cloud Monitoring, see Billing of Cloud Monitor.

Rule details

Parameter

Description

Rule name

Idle disk check for ECS instances

Rule identifier

ecs-disk-max-utilization-check

Tag

ECS

Automatic remediation

Not supported

Rule trigger

Periodic

Trigger frequency

24 hours

Supported resource types

ACS::ECS::Instance

Input parameters

relativeTime (Default value: 168)
utilization (Default value: 30)

Remediation guide

To remediate non-compliant resources detected by the "Idle disk check for ECS instances" rule, see Monitor hosts.