Amazon Snowball Edge is no longer available to new customers. New customers should explore [Amazon DataSync](https://aws.amazon.com/datasync/) for online transfers, [Amazon Data Transfer Terminal](https://aws.amazon.com/data-transfer-terminal/) for secure physical transfers, or Amazon Partner solutions. For edge computing, explore [Amazon Outposts](https://aws.amazon.com/outposts/). 

# Setting the NTP time servers for the device with Amazon OpsHub
Setting the NTP time servers for the device

 Follow these steps to view and update which time servers your device must synchronize time with.

**To check time sources**

1. On the Amazon OpsHub dashboard, find your device under **Devices**. Choose the device to open the device details page.

1. You will see a list of time sources that your device is synchronizing time with in the **Time sources** table.

   The **Time sources** table has four columns: 
   + **Address**: The DNS name / IP address of the time source
   + **State**: The current connection status between the device and that time source, there are 5 possible states:
     + **CURRENT**: Time source is currently being used to synchronize time
     + **COMBINED**: Time source is combined with the current source
     + **EXCLUDED**: Time source is excluded by the combining algorithm
     + **LOST**: Connection with the time source has been lost
     + **UNAVAILABILITY**: An invalid time source where the combining algorithm has deemed to be either a falseticker or has too much variability
   + **Type**: Network Time Protocol (NTP) sources can be a server or peer. A server can be set by the user using the **update-time-server** command, whereas a peer can only be set up using other Snowball Edge devices in the cluster and are automatically set up when the cluster is associated.
   + **Stratum**: The stratum of the source. **Stratum 1** indicates a source with a locally attached reference clock. A source that is synchronized to a Stratum 1 source is set at **Stratum 2**. A source that is synchronized to a stratum 2 source is set at **Stratum 3**, and so on.

**To update the time servers**

1. On the Amazon OpsHub dashboard, find your device under **Devices**. Choose the device to open the device details page.

1. You will see a list of time sources that your device is synchronizing time with in the **Time sources** table.

1. Choose **Update time servers** on the **Time sources** table.

1. Provide the DNS name or the IP address of the time servers you would like your device to synchronize time with, and choose **Update**.  
![\[Update time servers showing NTP time server IP address field and Update button.\]](http://docs.amazonaws.cn/en_us/snowball/latest/developer-guide/images/opshub-update-time-console.png)

**Supported NTP device types and software versions**  
NTP isn't available on any version 2 storage and compute device types. Snowball Edge version 3 storage and compute device types with software version 77 or later support NTP, however. To check if NTP is enabled, use the Snowball Edge CLI command `describe-time-sources`.