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F OpenNebula/engineering#279: add warning about ONTAP Volume Limitation #489

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tinova merged 1 commit into from
Dec 22, 2025
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F OpenNebula/engineering#279: add warning about ONTAP Volume Limitation #489

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4 changes: 4 additions & 0 deletions content/product/cluster_configuration/san_storage/netapp.md
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Expand Up @@ -268,6 +268,10 @@ Symbolic links from the System datastore will be created for each Virtual Machin
The minimum size for a NetApp volume is 20 MB, so any disk smaller than that will result in a 20 MB volume; however, the LUN inside will be the correct size.
{{< /alert >}}

{{< alert title="Warning" color="warning" >}}
NetApp ONTAP systems have Volume limitations found [in the NetApp Hardware Universe page](https://hwu.netapp.com), which can be anywhere from 1000 to 2500 Volumes. Be aware that each Image is a Volume and each Virtual Machine Disk is a Volume with a single LUN inside. This is to retain the atomic disk functionalities provided by OpenNebula.
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@tinova tinova Dec 19, 2025

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i think the limit can be higher? cannot check that link but I've seen references of up to 30k for newer NetApps

{{< /alert >}}

**Backups process details:**

Both Full and Incremental backups are supported by NetApp. For Full Backups, a snapshot of the Volume containing the VM disk LUN is taken and attached to the host, where it is converted into a qcow2 image and uploaded to the backup datastore.
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