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‎articles/azure-netapp-files/azure-netapp-files-metrics.md

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Azure NetApp Files provides metrics on allocated storage, actual storage usage, volume IOPS, and latency. By analyzing these metrics, you can gain a better understanding on the usage pattern and volume performance of your NetApp accounts.
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## Definitions
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Understanding the following terms is essential to your grasp of performance and capacity metrics in Azure NetApp Files:
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- **Capacity pool** – A capacity pool is how capacity is billed in Azure NetApp Files. Capacity pools contain volumes.
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- **Volume quota** – The amount of capacity provisioned to an Azure NetApp Files volume. Volume quota is directly tied to automatic Quality of Service (Qos), which impacts the volume performance. For more information, see [QoS types for capacity pools](azure-netapp-files-understand-storage-hierarchy.md#qos_types).
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- **Throughput** – The amount of data transmitted across the wire (read/write/other) between Azure NetApp Files and the client. Throughput in Azure NetApp Files is measured in bytes per second.
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- **Latency** – Latency is the amount of time for a storage operation to complete within storage from the time it arrives to the time it is processed and is ready to be sent back to the client. Latency in Azure NetApp Files is measured in milliseconds (ms).
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### Storage performance operation metrics
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An operation in Azure NetApp Files is defined as _something_ that happens during a client-server conversation. For example, when a client requests a file to be read from an Azure NetApp Files volume, read and “other” operations are sent and received between the client and server.
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When monitoring the Azure NetApp Files volume, read and write operations are self-explanatory. Metrics includes another category called "Other IOPS," referring to any operation that is not a read or write. These operations include metadata, which is present alongside most read and write operations. The "Other IOPS" metric encompasses the following metadata operations:
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**NFSv3**
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- A summary of NFSv3 metadata calls included in “Other IOPS” as covered in [RFC-1813](https://www.rfc-editor.org/rfc/rfc1813):
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- Procedure 0: NULL - Do nothing
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- Procedure 1: GETATTR - Get file attributes
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- Procedure 2: SETATTR - Set file attributes
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- Procedure 3: LOOKUP - Lookup filename
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- Procedure 4: ACCESS - Check Access Permission
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- Procedure 5: READLINK - Read from symbolic link
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- Procedure 8: CREATE - Create a file
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- Procedure 9: MKDIR - Create a directory
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- Procedure 10: SYMLINK - Create a symbolic link
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- Procedure 11: MKNOD - Create a special device
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- Procedure 12: REMOVE - Remove a File
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- Procedure 13: RMDIR - Remove a Directory
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- Procedure 14: RENAME - Rename a File or Directory
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- Procedure 15: LINK - Create Link to an object
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- Procedure 16: READDIR - Read From Directory
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- Procedure 17: READDIRPLUS - Extended read from directory
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- Procedure 18: FSSTAT - Get dynamic file system information
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- Procedure 19: FSINFO - Get static file system Information
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- Procedure 20: PATHCONF - Retrieve POSIX information
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- Procedure 21: COMMIT - Commit cached data on a server to stable storage
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**NFSv4.1**
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A summary of NFSv4.1 metadata calls included in “Oother IOPSops” as covered in [RFC-7530](https://www.rfc-editor.org/rfc/rfc7530):
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- Procedure 0: NULL – Do nothing
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- Procedure 1: COMPOUND – Combining multiple NFS operations into a single request
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- Operation 3: ACCESS – Check access rights
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- Operation 4: CLOSE – Close file
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- Operation 5: COMMIT – Commit cached data
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- Operation 6: CREATE - Create a Non-regular File Object
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- Operation 7: DELEGPURGE - Purge Delegations Awaiting Recovery
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- Operation 8: DELEGRETURN - Return Delegation
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- Operation 9: GETATTR - Get Attributes
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- Operation 10: GETFH - Get Current Filehandle
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- Operation 11: LINK - Create Link to a File
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- Operation 12: LOCK - Create Lock
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- Operation 13: LOCKT - Test for Lock
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- Operation 14: LOCKU - Unlock File
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- Operation 15: LOOKUP - Look Up Filename
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- Operation 16: LOOKUPP - Look Up Parent Directory
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- Operation 17: NVERIFY - Verify Difference in Attributes
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- Operation 18: OPEN - Open a Regular File
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- Operation 19: OPENATTR - Open Named Attribute Directory
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- Operation 20: OPEN_CONFIRM - Confirm Open
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- Operation 21: OPEN_DOWNGRADE - Reduce Open File Access
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- Operation 22: PUTFH - Set Current Filehandle
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- Operation 23: PUTPUBFH - Set Public Filehandle
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- Operation 24: PUTROOTFH - Set Root Filehandle
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- Operation 26: READDIR - Read Directory
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- Operation 27: READLINK - Read Symbolic Link
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- Operation 28: REMOVE - Remove File System Object
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- Operation 29: RENAME - Rename Directory Entry
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- Operation 30: RENEW - Renew a Lease
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- Operation 32: SAVEFH - Save Current Filehandle
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- Operation 33: SECINFO - Obtain Available Security
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- Operation 34: SETATTR - Set Attributes
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- Operation 35: SETCLIENTID - Negotiate Client ID
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- Operation 36: SETCLIENTID_CONFIRM - Confirm Client ID
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- Operation 37: VERIFY - Verify Same Attributes
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- Operation 39: RELEASE_LOCKOWNER – Release Lock-Owner State
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**SMB (includes SMB2 and SMB3.x)**
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SMB commands listed in Other IOPS with opcode value:
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- SMB2 NEGOTIATE         0x0000
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- SMB2 SESSION_SETUP     0x0001
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- SMB2 LOGOFF            0x0002
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- SMB2 TREE_CONNECT      0x0003
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- SMB2 TREE_DISCONNECT   0x0004
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- SMB2 CREATE            0x0005
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- SMB2 CLOSE             0x0006
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- SMB2 FLUSH             0x0007
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- SMB2 LOCK              0x000A
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- SMB2 IOCTL             0x000B
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- SMB2 CANCEL            0x000C
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- SMB2 ECHO              0x000D
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- SMB2 QUERY_DIRECTORY   0x000E
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- SMB2 CHANGE_NOTIFY     0x000F
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- SMB2 QUERY_INFO        0x0010
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- SMB2 SET_INFO          0x0011
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- SMB2 OPLOCK_BREAK      0x0012
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## Ways to access metrics
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Azure NetApp Files metrics are natively integrated into Azure monitor. From within the Azure portal, you can find metrics for Azure NetApp Files capacity pools and volumes from two locations:

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