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azure-netapp-files-service-levels.md

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title description services documentationcenter author manager editor ms.assetid ms.service ms.workload ms.tgt_pltfrm ms.devlang ms.topic ms.date ms.author
Service levels for Azure NetApp Files | Microsoft Docs
Describes throughput performance for the service levels of Azure NetApp Files.
azure-netapp-files
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azure-netapp-files
storage
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conceptual
01/09/2019
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Service levels for Azure NetApp Files

Service levels are an attribute of a capacity pool. Service levels are defined and differentiated by the allowed maximum throughput for a volume in the capacity pool based on the quota that is assigned to the volume.

Supported service levels

Azure NetApp Files supports three service levels: Ultra, Premium, and Standard.

  • Ultra storage

    The Ultra storage tier provides up to 128 MiB/s of throughput per 1 TiB of volume quota assigned.

  • Premium storage

    The Premium storage tier provides up to 64 MiB/s of throughput per 1 TiB of volume quota assigned.

  • Standard storage

    The Standard storage tier provides up to 16 MiB/s of throughput per 1 TiB of volume quota assigned.

Throughput limits

The throughput limit for a volume is determined by the combination of the following factors:

  • The service level of the capacity pool to which the volume belongs
  • The quota assigned to the volume

This concept is illustrated in the diagram below:

Service level illustration

In Example 1 above, a volume from a capacity pool with the Premium storage tier that is assigned 2 TiB of quota will be assigned a throughput limit of 128 MiB/s (2 TiB * 64 MiB/s). This scenario applies regardless of the capacity pool size or the actual volume consumption.

In Example 2 above, a volume from a capacity pool with the Premium storage tier that is assigned 100 GiB of quota will be assigned a throughput limit of 6.25 MiB/s (0.09765625 TiB * 64 MiB/s). This scenario applies regardless of the capacity pool size or the actual volume consumption.

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