To allow for NFS users to belong to more than 16 groups, the option to enable support for Extended Groups introduces ID validation via an appropriate Name Service If the user has group association loc...To allow for NFS users to belong to more than 16 groups, the option to enable support for Extended Groups introduces ID validation via an appropriate Name Service If the user has group association local to NFS client, not in name-services, ONTAP cannot grant access based on these unless the user and group are appropriately defined locally on the SVM The default for this setting is approximately 256, and can stop the Vserver from looking up all the groups in LDAP
