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Parameters are used for controlling the wanted behavior and advanced tweaking of NAS related features. All parameter changes are preserved through SP reboots and NAS server mobility operations. Management of parameters is only available in the CLI and can be managed by the service user. As of OE version 4.1, the ability to configure system parameters is available. OE version 4.2 includes an additional enhancement which enables parameters to be configured at a NAS server level. This enables a higher level of granularity and allows parameters to be automatically replicated as part of NAS server replication. As part of this enhancement, the svc_param command is deprecated and is replaced by the svc_nas –param command on OE version 4.2 and later.
When viewing details or changing a parameter, the output provides additional information about the parameter including the granularity and when it takes effect. Certain parameters are still global, which means they can only be applied at the system level. Also, some parameter changes require a SP or NAS server reboot to take effect. The figure below shows an example of a NAS server parameter.
As part of this feature, the ability to restart an individual NAS server is introduced so parameter changes can be applied without affecting other NAS servers on the system. Restarting a NAS server causes a brief outage to clients that are not running SMB3+CA or NFS.
For more information about all of the available NAS server parameters and how to configure them, reference the Service Commands document on Dell Technologies Info Hub.