NetApp
Configuration > Network > Network Files : Managing network files : Editing the password duration for a local user
Editing the password duration for a local user
You can modify the duration that a local user password is effective. Setting a shorter duration increases the security of the system access.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Configuration > Local Users and Groups > Users.
3.
Select the local user whose password duration you want to modify and click Edit.
4.
In the General tab, type the minimum number of days that the user must have the password before they can change it.
This value is by default set to zero.
5.
Type the maximum number of days that the user can use the password before they have to change it.
6.
Click Save and Close to save your changes and close the dialog box.