NetApp
Cluster : Configuration > System Tools > DateTime : Managing the cluster time (cluster administrators only) : Setting the time for a cluster
Setting the time for a cluster
About this task 
On a cluster running Data ONTAP 8.2 and later releases, Network Time Protocol (NTP) is always enabled on the cluster. To disable NTP (not recommended), you must contact technical support. You can add the IP addresses of the NTP server at your site. This server is used to synchronize the time across the cluster.
Steps 
1.
From the home page, double-click the appropriate storage system.
2.
Expand the Cluster hierarchy in the left navigation pane.
3.
In the navigation pane, click Configuration > System Tools > DateTime.
4.
Click Edit.
5.
Select the time zone.
6.
Specify the IP address of the time servers and click Add.
7.
Click OK.
8.
Verify the changes you made to the date and time settings in the DateTime window.
Parent Topic: Managing the cluster time (cluster administrators only)
Related tasks 
Creating a Kerberos realm configuration
Related reference 
DateTime window

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