Specifying Network Time Protocol server information

You must specify the Network Time Protocol (NTP) configuration information for the StorageGRID Webscale system, so that operations performed on separate servers can be kept synchronized.

About this task

You must specify external NTP servers. The specified NTP servers must use the NTP protocol.

You must specify four NTP server references of Stratum 3 or better to prevent issues with time drift.
Note: When specifying the external NTP source for a production-level StorageGRID Webscale installation, do not use the Windows Time (W32Time) service on a version of Windows earlier than Windows Server 2016. The time service on earlier versions of Windows is not sufficiently accurate and is not supported by Microsoft for use in high-accuracy environments, such as StorageGRID Webscale.

Support boundary to configure the Windows Time service for high-accuracy environments

The external NTP servers connect to the nodes to which you previously assigned Primary NTP roles. For this reason, specifying at least two nodes with Primary NTP roles is recommended.
Attention: Make sure that at least two nodes at each site can access at least four external NTP sources. If only one node at a site can reach the NTP sources, timing issues will occur if that node goes down. In addition, designating two nodes per site as primary NTP sources ensures accurate timing if a site is network islanded from the rest of the grid.


  1. Specify the IP addresses for at least four NTP servers in the Server 1 to Server 4 text boxes.
  2. If necessary, click the plus sign next the last entry to add additional server entries.

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  3. Click Next.