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Configure Management module to synchronize to NTP server
6 Time configuration and synchronization across Management modules, IOMs and iDRACs |
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4. Provide Primary NTP server address and/or Secondary NTP server address and/or Tertiary NTP
server address and select Apply.
Case 1: Only Primary NTP server address provided.
NTP takes the available sources of time and submits their timing data to intersection and clustering
algorithms, looking for the best idea of the correct time.
While providing only primary NTP server address could work most of the times, it is a good practice to
provide 3 servers at minimum. Faulty primary NTP server address could cause the management
module to work at incorrect time, or cause failovers.
Case 2: NTP server pool (Primary, Secondary, and Tertiary server)
It is recommended to use a pool of three NTP servers rather than using one or two standalone
servers. Using pool of servers means that all the servers are syncing their time to each other via a
primary time source so in case of connectivity loss with one of the server, the chassis may accurately
maintain the time by switching to the other server in the pool. It will also help the NTP client on the
chassis to manage the time drift due to network traffic.