2017-04-21 17:45 UTC: The issue has been resolved. The issue was due to a file system instability in one of our clusters which services a subset of deployed Enterprise Agents.  For customers whose Agents were affected, the Agents have uploaded data that was locally cached during the outage.

Beginning at approximately 14:31 UTC on April 21st, some Enterprise Agents were unable to check in with their designated agent collector, preventing Agents from committing collected data to the ThousandEyes platform.

Agents will continue executing their configured scheduled tests and will retain test results locally in persistent storage until results can be committed. 

At this time, our operations team is aware of the cause and is actively working on fixing it.