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Merge pull request #217396 from b-ahibbard/anf-update-maxfiles
update maxfiles limits
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articles/azure-netapp-files/azure-netapp-files-resource-limits.md

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ms.workload: storage
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ms.tgt_pltfrm: na
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ms.topic: conceptual
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ms.date: 09/07/2022
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ms.date: 11/07/2022
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ms.author: anfdocs
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---
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# Resource limits for Azure NetApp Files
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## `Maxfiles` limits <a name="maxfiles"></a>
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Azure NetApp Files volumes have a limit called *`maxfiles`*. The `maxfiles` limit is the number of files a volume can contain. Linux file systems refer to the limit as *inodes*. The `maxfiles` limit for an Azure NetApp Files volume is indexed based on the size (quota) of the volume. The `maxfiles` limit for a volume increases or decreases at the rate of 20 million files per TiB of provisioned volume size.
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Azure NetApp Files volumes have a limit called *`maxfiles`*. The `maxfiles` limit is the number of files a volume can contain. Linux file systems refer to the limit as *inodes*. The `maxfiles` limit for an Azure NetApp Files volume is indexed based on the size (quota) of the volume. The `maxfiles` limit for a volume increases or decreases at the rate of 21,251,126 files per TiB of provisioned volume size.
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The service dynamically adjusts the `maxfiles` limit for a volume based on its provisioned size. For example, a volume configured initially with a size of 1 TiB would have a `maxfiles` limit of 20 million. Subsequent changes to the size of the volume would result in an automatic readjustment of the `maxfiles` limit based on the following rules:
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The service dynamically adjusts the `maxfiles` limit for a volume based on its provisioned size. For example, a volume configured initially with a size of 1 TiB would have a `maxfiles` limit of 21,251,126. Subsequent changes to the size of the volume would result in an automatic readjustment of the `maxfiles` limit based on the following rules:
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| Volume size (quota) | Automatic readjustment of the `maxfiles` limit |
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|----------------------------|-------------------|
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| <= 1 TiB | 20 million |
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| > 1 TiB but <= 2 TiB | 40 million |
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| > 2 TiB but <= 3 TiB | 60 million |
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| > 3 TiB but <= 4 TiB | 80 million |
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| > 4 TiB | 100 million |
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| <= 1 TiB | 21,251,126 |
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| > 1 TiB but <= 2 TiB | 42,502,252 |
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| > 2 TiB but <= 3 TiB | 63,753,378 |
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| > 3 TiB but <= 4 TiB | 85,004,504 |
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| > 4 TiB | 106,255,630 |
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>[!IMPORTANT]
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> If your volume has a quota of at least 4 TiB and you want to increase the quota, you must initiate [a support request](#request-limit-increase).
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For volumes with at least 4 TiB of quota, you can increase the `maxfiles` (inodes) limit beyond 100 million. For every 100 million files you increase (or a fraction thereof), you need to increase the corresponding volume quota by 4 TiB. For example, if you increase the `maxfiles` limit from 100 million files to 200 million files (or any number in between), you need to increase the volume quota from 4 TiB to 8 TiB.
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For volumes with at least 4 TiB of quota, you can increase the `maxfiles` (inodes) limit beyond 100 million. For every 100 million files you increase (or a fraction thereof), you need to increase the corresponding volume quota by 4 TiB. For example, if you increase the `maxfiles` limit from 100 million files to 200 million files (or any number in between), you need to increase the volume quota from 4 TiB to 8 TiB.
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You can increase the `maxfiles` limit to 500 million if your volume quota is at least 20 TiB.
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