Configure NTP servers and the time zone for the storage cluster at setup or as described in Changing or setting configuration information for the storage cluster (Bare metal). The NTP servers synchronize the time within the storage cluster based on these settings.
Synchronize the time on any storage cluster components* by using NTP or other time-synchronization methods. When you use multiple NTP servers, also synchronize the time on NTP servers. By synchronizing the time, you can avoid the risk of problems due to the time gap, and identifying the cause of a problem (such as a failure) becomes easier.
* The system components include BMCs (storage nodes, spare nodes), storage nodes, compute nodes, controller nodes, and network devices.
Changing the time of NTP servers
If you want to change the time of NTP servers, follow the procedure and make sure that you perform stopping the storage cluster beforehand.
1. Perform stopping the storage cluster.
2. Change the time of the NTP servers.
3. Configure the settings so that the time on other storage cluster components* is synchronized with the new set time.
4. Start the storage cluster.
* The system components include BMCs, storage nodes, compute nodes, controller nodes, and network devices.
Using Windows Time Service as an NTP server
To use Windows Time Service on Windows Server as an NTP server for a storage system, you must specify the settings so that time can be synchronized with other NTP servers in the network.