1 minute read.Last Modified 2021-03-03 10:30 EST
Network Time Protocol (NTP) servers sync the local system time with an accurate external reference. By default, new installations use several existing NTP servers. TrueNAS supports adding custom NTP servers.
Go to System > NTP Servers to view, edit, or remove NTP Servers:
Several default servers are listed. To register a new server, click ADD and configure the options.
NTP Server Settings
|Address||Enter the hostname or IP address of the NTP server.|
|Burst||Recommended when Max. Poll is greater than 10. Only use on personal NTP servers or those under direct control. Do not enable when using public NTP servers.|
|IBurst||Speeds up the initial synchronization (seconds instead of minutes).|
|Prefer||Should only be used for highly accurate NTP servers such as those with time monitoring hardware.|
|Min Poll||The minimum polling interval, in seconds, as a power of 2. For example, 6 means 2^6, or 64 seconds. The default is 6, minimum value is 4.|
|Max Poll||The maximum polling interval, in seconds, as a power of 2. For example, 10 means 2^10, or 1,024 seconds. The default is 10, maximum value is 17.|
|Force||Forces the addition of the NTP server, even if it is currently unreachable.|