Description of changes:
The Hub Production environment will be upgraded beginning 9/10.  This will be a rolling upgrade to the application layer on server instances that are in a scale-out configuration, and therefore we do not anticipate any service interruption.  The Hub Validation environment was similarly upgraded successfully last week with no service interruption.

Scope:
The upgrade will be applied to the eHealth Exchange Hub PRODUCTION environments as outlined above.

Impact:
We do not anticipate any service interruptions during the Hub upgrade; Real-time routing of messages through the Hub will be unaffected.

Note that the Hub Dashboard may experience periods where the Hub is queueing messages to be sent to the Hub Dashboard and therefore the Dashboard content will be incomplete.  Those messages, though, are being queued at the Hub and will be released/propagated over to the Hub Dashboard once the server upgrades are complete.

Support:
eHealth Exchange staff will monitor administrator@ehealthexchange.org during the upgrade window to address any questions or concerns. 

ADDITIONAL INFORMATION AND REMINDERS:

The eHealth Exchange Hub team has implemented a recurring weekly scheduled maintenance window each Thursday evening at 5:00pm ET for all non-urgent events.  The duration of each maintenance event will be determined by the respective changes for each event, and details will be communicated out to all Participants at least 48 hours prior to the event.  If there are no changes for any given week then the maintenance event will not occur and no notice will be sent. Also please note that Operating System and similar updates that do not require a service outage, and do not require changes to the application layer, will be performed during this scheduled maintenance window without specific notice due to their frequent and routine nature.