Known limitations for Cloud Volumes ONTAP 9.9.0 in Azure
The following known limitations are specific to Cloud Volumes ONTAP in Microsoft Azure. Be sure to also review Limitations for Cloud Volumes ONTAP 9.9.0 in all cloud providers.
Flash Cache limitations
The Standard_L8s_v2 VM type includes local NVMe storage, which Cloud Volumes ONTAP uses as Flash Cache. Note the following limitations for Flash Cache:
Compression must be disabled on all volumes to take advantage of the Flash Cache performance improvements.
You can choose no storage efficiency when creating a volume from Cloud Manager, or you can create a volume and then disable data compression by using the CLI.
Cache rewarming after a reboot is not supported with Cloud Volumes ONTAP.
The following limitations affect Cloud Volumes ONTAP HA pairs in Microsoft Azure:
NFSv4 isn’t supported. NFSv3 is supported.
HA pairs aren’t supported in some regions.
Pay-as-you-go not available for CSP partners
If you are a Microsoft Cloud Solution Provider (CSP) partner, you cannot deploy Cloud Volumes ONTAP Explore, Standard, or Premium because pay-as-you-go subscriptions are not available for CSP partners. You must purchase a license and deploy Cloud Volumes ONTAP BYOL.