# OS metrics in Enhanced Monitoring
<a name="USER_Monitoring-Available-OS-Metrics"></a>

Amazon RDS provides metrics in real time for the operating system (OS) that your DB instance runs on. RDS delivers the metrics from Enhanced Monitoring to your Amazon CloudWatch Logs account. The following tables list the OS metrics available using Amazon CloudWatch Logs.



**Topics**
+ [OS metrics for Db2, MariaDB, MySQL, Oracle, and PostgreSQL](#USER_Monitoring-Available-OS-Metrics-RDS)
+ [OS metrics for Microsoft SQL Server](#USER_Monitoring-Available-OS-Metrics-RDS.SQLServer)

## OS metrics for Db2, MariaDB, MySQL, Oracle, and PostgreSQL
<a name="USER_Monitoring-Available-OS-Metrics-RDS"></a>

RDS collects disk metrics for `rdsdbdata` as well as additional storage volumes present in the OS. To view OS metrics in CloudWatch Logs, see [Viewing OS metrics using CloudWatch Logs](USER_Monitoring.OS.CloudWatchLogs.md).

<a name="cloudwatch-os-metrics"></a>[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Monitoring-Available-OS-Metrics.html)

## OS metrics for Microsoft SQL Server
<a name="USER_Monitoring-Available-OS-Metrics-RDS.SQLServer"></a>

RDS collects disk metrics for `rdsdbdata` as well as additional storage volumes present in the OS. To view OS metrics in CloudWatch Logs, see [Viewing OS metrics using CloudWatch Logs](USER_Monitoring.OS.CloudWatchLogs.md).

<a name="cloudwatch-sql-server-metrics"></a>[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Monitoring-Available-OS-Metrics.html)