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Will changing time server cause service interruption

Hello Experts,

I have a concern regarding our filers. We are in EastCoast and our timezone was configured as follows for each filer

filer 1

Time Zone "EST5EDT"

Timed Protocol: NTP

Time: Currently showing  +5 hours of the EastCoast time here in US

Time Servers: <Domain Controllers IP addresses>

filer 2

Time Zone "EST5EDT"

Timed Protocol: NTP

Time: Currently showing  +5 hours of the EastCoast time here in US

Time Servers: <wrong Domain Controllers IP addresses, I assume the contractor who setup our Netapp made a mistake here>

What is wrong with our setting right now? I am expecting the time to show as the correct time in EST but right now it is 5 hours +.

When I type in CLI the command "date"

I see the time as 5 hours advanced and in GMT

What should I change? and will it cause service interruption?

Thanks,

Maico

Re: Will changing time server cause service interruption

Please refer to system administration guide available under below now URL for the version of ONTAP that you are running.

http://now.netapp.com/eservice/Documentation.jsp

If I were you I will try below steps

1) Disable time sync options timed.enable off

2) Update the time servers options timed.servers server1, server2

    Ensure filer can resolve hostname for NTP servers above

3) enable timed timed.enable on

4) Check the time on the filer by date command and also timezone command to verify the TZ configuration

Also note that if CIFS services were configured and if there is more than 5 minutes difference kerberos authentication mechanism  may fail. Hope this helps.