Documentation forSolarWinds Observability

Elastic File System (EFS) metrics

Amazon Elastic File System (Amazon EFS) provides simple, scalable file storage for use with Amazon EC2 instances in the AWS Cloud. Ensure your cloud platform is configured in SolarWinds Observability to collect this service's data. See Add an AWS cloud account. CloudWatch metrics must also be enabled for this service in the AWS Console for the metric data to be available.

Depending on the subscription pricing tier of your AWS account or its services, additional metrics may be available for this entity. To collect additional Amazon EFS metrics, the service needs to be created in general purpose mode.

Many of the collected metrics from AWS EFS entities are displayed as widgets in SolarWinds Observability explorers; additional metrics may be collected and available in the Metrics Explorer. You can also create an alert for when an entity's metric value moves out of a specific range. See Entities in SolarWinds Observability for information about entity types in SolarWinds Observability.

The following table lists some of the metrics collected for these entities. To see the AWS EFS metrics in the Metrics Explorer, type AWS.EFS in the search box.

Metric Units Description
sw.metrics.healthscore Percent (%)

Health score. A health score provides real-time insight into the overall health and performance of your monitored entities. The health score is calculated based on anomalies detected for the entity, alerts triggered for the entity's metrics, and the status of the entity. The health score is displayed as a single numerical value that ranges from a Good (70-100) to Moderate (40-69) to Bad (0-39) distinction.

To view the health score for AWS EFS entities in the Metrics Explorer, filter the sw.metrics.healthscore metric by entity_types and select awsefs.

AWS.EFS.BurstCreditBalance Binary Bytes

BurstCreditBalance. The average number of burst credits that a file system has. Burst credits allow a file system to burst to throughput levels above a file system’s baseline level for periods of time.

AWS.EFS.ClientConnections Count

ClientConnections. The total number of client connections to a file system. When using a standard client, there is one connection per mounted Amazon EC2 instance.

AWS.EFS.DataReadIOBytes Binary Bytes

DataReadIOBytes. The average number of bytes for each file system read operation.

AWS.EFS.DataWriteIOBytes Binary Bytes

DataWriteIOBytes. The average number of bytes for each file system write operation.

AWS.EFS.MetadataIOBytes Binary Bytes

MetadataIOBytes. The average number of bytes for each metadata operation.


MeteredIOBytes. The average number of metered bytes for each file system operation, including data read, data write, and metadata operations, with read operations metered at one-third the rate of other operations.

AWS.EFS.PercentIOLimit Percent (%)

PercentIOLimit. How close a file system is to reaching the I/O limit of the General Purpose performance mode. Data is available only for file systems running with General Purpose performance mode.


PermittedThroughput. The maximum amount of throughput that a file system can drive.


StorageBytes. The average size of the file system in bytes, including the amount of data stored in the EFS Standard and EFS Standard–Infrequent Access (EFS Standard-IA) storage classes.


TimeSinceLastSync. The average amount of time that has passed since the last successful sync to the destination file system in a replication configuration.

AWS.EFS.TotalIOBytes Binary Bytes

TotalIOBytes. The total number of bytes for each file system operation, including data read, data write, and metadata operations. This is the actual amount that your application is driving, and not the throughput the file system is being metered at.