# Volume metrics

Your Amazon FSx for NetApp ONTAP file system can have one or more volumes that store your data. Each
of these volumes has a set of metrics, classified as either **Volume
metrics** or **Detailed volume metrics**.

**Volume metrics**are per-volume performance and storage metrics that take two dimensions,`FileSystemId`

and`VolumeId`

.`FileSystemId`

maps to the file system that the volume belongs to.**Detailed volume metrics**are per-storage-tier metrics that measure storage consumption per tier with the`StorageTier`

dimension (with possible values of`SSD`

and`StandardCapacityPool`

) and per data type with the`DataType`

dimension (with possible values of`User`

,`Snapshot`

, and`Other`

). These metrics have the`FileSystemId`

,`VolumeId`

,`StorageTier`

, and`DataType`

dimensions.

## Network I/O metrics

All of these metrics take two dimensions, `FileSystemId`

and `VolumeId`

.

Metric | Description |
---|---|

`DataReadBytes` |
The number of bytes (network I/O) read from the volume by clients. The Units: Bytes Valid statistics: |

`DataWriteBytes` |
The number of bytes (network I/O) written to the volume by clients. The Units: Bytes Valid statistics: |

`DataReadOperations` |
The number of read operations (network I/O) on the volume by clients. The Units: Count Valid statistics: |

`DataWriteOperations` |
The number of write operations (network I/O) on the volume by clients. The Units: Count Valid statistics: |

`MetadataOperations` |
The number of I/O operations (network I/O) from metadata activities by clients to the volume. The Units: Count Valid statistics: |

`DataReadOperationTime` |
The sum of total time spent within the volume for read operations (network I/O) from clients accessing data in the volume. The Units: Seconds Valid statistics: |

`DataWriteOperationTime` |
The sum of total time spent within the volume for fulfilling write operations (network I/O) from clients accessing data in the volume. The Units: Seconds Valid statistics: |

`MetadataOperationTime` |
The sum of total time spent within the volume for fulfilling metadata operations (network I/O) from clients that are accessing data in the volume. The Units: Seconds Valid statistics: |

`CapacityPoolReadBytes` |
The number of bytes read (network I/O) from the volume's capacity pool tier. To ensure data integrity, ONTAP performs a read operation on the capacity pool immediately after performing a write operation. The Units: Bytes Valid statistics: |

`CapacityPoolReadOperations` |
The number of read operations (network I/O) from the volume's capacity pool tier. This translates to a capacity pool read request. To ensure data integrity, ONTAP performs a read operation on the capacity pool immediately after performing a write operation. The Units: Count Valid statistics: |

`CapacityPoolWriteBytes` |
The number of bytes written (network I/O) to the volume's capacity pool tier. To ensure data integrity, ONTAP performs a read operation on the capacity pool immediately after performing a write operation. The Units: Bytes Valid statistics: |

`CapacityPoolWriteOperations` |
The number of write operations (network I/O) to the volume from the capacity pool tier. This translates to a write request. The Units: Count Valid statistics: |

## Storage capacity metrics

All of these metrics take two dimensions, `FileSystemId`

and `VolumeId`

.

Metric | Description |
---|---|

`StorageCapacity` |
The size of the volume in bytes. Units: Bytes Valid statistics: |

`StorageUsed` |
The used logical storage capacity of the volume. Units: Bytes Valid statistics: |

`StorageCapacityUtilization` |
The storage capacity utilization of the volume. Units: Percent Valid statistics: |

`FilesUsed` |
The used files (number of files or inodes) on the volume. Units: Count Valid statistics: |

`FilesCapacity` |
The total number of inodes that can be created on the volume. Units: Count Valid statistics: |

## Detailed volume metrics

Detailed volume metrics take more dimensions than volume metrics, enabling more
granular measurements of your data. All detailed volume metrics have the dimensions
`FileSystemId`

, `VolumeId`

, `StorageTier`

, and
`DataType`

.

The

`StorageTier`

dimension indicates the storage tier that the metric measures, with possible values of`All`

,`SSD`

, and`StandardCapacityPool`

.The

`DataType`

dimension indicates the type of data that the metric measures, with possible values of`All`

,`User`

,`Snapshot`

, and`Other`

.

The following table defines what the `StorageUsed`

metric measures for the listed dimensions.

Metric | Description |
---|---|

`StorageUsed` |
The amount of logical space used, in bytes.
This metric measures different types of space consumption
depending on the dimensions used with this metric.
When setting Units: Bytes Valid statistics: |

`StorageCapacityUtilization` |
The percentage of the volume's used physical disk space. Units: Percent Valid statistics: |