How do I synchronize the Storage Sync Server clock with Domain Controller?

Storage Sync requires the system clock to be synchronized with the Domain Controller's clock (DC) clock if users are authentication to the share using their Active Directory credentials. The internal clock for Storage Sync must be set to within 5 minutes of the DC clock. If the clocks are not synchronized the Kerberos authentication will fail. 

Users may also receive the error below which occurs when a drive tries to re-connect to the Storage Sync share. 

Manually re-sync the clocks

Manually re-syncing the clock can be invoked by running the command below within your Storage Sync VM.

net time set -Sipaddress (Replace ipaddress with the Domain Controller IP)

Configuring NTP to sync the clocks automatically

The steps below will allow the Storage Sync clock to always be in sync with an NTP server and time difference will be adjusted slowly.

  • Make a backup of the /etc/ntp.conf file 

                cp /etc/ntp.conf /etc/ntp.conf.orig

  • Open ntp.conf file using VI and comment predefined ntpservers using # as prefix:

  • Then add the desired NTP server address, typically your DC, as indicated in the above screenshot.
  • Add another line similar to the one above if you have multiple NTP servers or wish to use public ones.
  • Come out of the VI editor and Stop the NTP services

               /etc/init.d/ntpd stop

  • Sync the ELC time with NTP server

               ntpdate NTP.SERVER.ADDRESS

  • Start the NTP daemon

               /etc/init.d/ntpd start

To run at boot up, turn on server chkconfig ntpd on

 NOTE: If the time is not in sync then stop the NTP service again, run ntpdate NTP.SERVER.ADDRESS and then start the NTP service.

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