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ONTAP NAS driver overview

Contributors juliantap netapp-aruldeepa
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Learn about configuring an ONTAP backend with ONTAP and Cloud Volumes ONTAP NAS drivers.

ONTAP NAS driver details

Trident provides the following NAS storage drivers to communicate with the ONTAP cluster. Supported access modes are: ReadWriteOnce (RWO), ReadOnlyMany (ROX), ReadWriteMany (RWX), ReadWriteOncePod (RWOP).

Driver Protocol volumeMode Access modes supported File systems supported

ontap-nas

NFS
SMB

Filesystem

RWO, ROX, RWX, RWOP

"", nfs, smb

ontap-nas-economy

NFS
SMB

Filesystem

RWO, ROX, RWX, RWOP

"", nfs, smb

ontap-nas-flexgroup

NFS
SMB

Filesystem

RWO, ROX, RWX, RWOP

"", nfs, smb
Warning

  • Use ontap-san-economy only if persistent volume usage count is expected to be higher than supported ONTAP volume limits.

  • Use ontap-nas-economy only if persistent volume usage count is expected to be higher than supported ONTAP volume limits and the ontap-san-economy driver cannot be used.

  • Do not use use ontap-nas-economy if you anticipate the need for data protection, disaster recovery, or mobility.

User permissions

Trident expects to be run as either an ONTAP or SVM administrator, typically using the admin cluster user or a vsadmin SVM user, or a user with a different name that has the same role.

For Amazon FSx for NetApp ONTAP deployments, Trident expects to be run as either an ONTAP or SVM administrator, using the cluster fsxadmin user or a vsadmin SVM user, or a user with a different name that has the same role. The fsxadmin user is a limited replacement for the cluster admin user.

Note If you use the limitAggregateUsage parameter, cluster admin permissions are required. When using Amazon FSx for NetApp ONTAP with Trident, the limitAggregateUsage parameter will not work with the vsadmin and fsxadmin user accounts. The configuration operation will fail if you specify this parameter.

While it is possible to create a more restrictive role within ONTAP that a Trident driver can use, we don't recommend it. Most new releases of Trident will call additional APIs that would have to be accounted for, making upgrades difficult and error-prone.