NetApp
Configuration > Security > Password/RSH : Configuring password/RSH : Changing the system password

Changing the system password
You can change the storage system password for increased security. The system password is also the password for the root user account.
Before you begin 
The current system password must be available.
Steps 
1.
From the Home tab, double-click the appropriate storage system.
2.
In the navigation pane, click Configuration > Security > Password/RSH.
3.
Click Change Password.
If you have the necessary permissions to change other user's passwords, this dialog box enables you to reset them.
4.
Type your user name and your current password in the appropriate fields.
5.
Type your new password in the appropriate fields.
6.
Click Change.
Result 
The system displays a confirmation message.