GMS Cloud Model

Sept 22, 2014


GMS Cloud Model 1

The Process for using the Cloud. 2

Role of the Laptop. 3

Disaster Recovery and Fall Back plan. 3

Requirements. 4

Pros & Cons. 4


The Cloud model was introduced to simplify GMS deployment at events.  The GMS server will be in the Public Internet "Cloud" and the tablets connect directly to it.  This allows GMS "experts" to set up and monitor the GMS server. The event staff can focus on performing their volunteer roles.  It also allows the server to be shared by multiple concurrent events.

The main requirement is that the event site WiFi network should allow access to the public Internet.

The Process for using the Cloud

The "Best Practices" steps that should be performed by the event staff (GMS Cloud Engineer) prior to the start of an event are:

Role of the Laptop

In the Cloud model, a laptop is not needed to act as the primary server.  However, a laptop is highly recommended.  Its main purpose is to facilitate recovery in case Internet access is disrupted.  While it is standing by, it can add several useful functions, like:

Preparation is required to make Disaster Recovery swift and smooth.   Instructions for setting up the Backup Laptop are here.

Disaster Recovery and Fall Back plan

With the Cloud model, loss of access to the Internet can be disastrous.  A laptop can serve as a "Backup" server and will mirror the data on the Cloud server.  It will periodically download the latest state from the server in the cloud and keep itself updated.  In case of disaster, the recovery procedure is to:

This switch should take about 10 minutes.  The backup server will be used for the remainder of the event; there are no procedures to revert back to the cloud model.  The 'emergency' WiFi coverage may be limited to about 100' from the LRI desk, and Inspectors will have to approach the LRI desk periodically to update their tablets.


Internet access is required to the GMS Cloud server:

Pros & Cons

The "Local" and "Cloud" models are functionally similar, however the Cloud model has several advantages:



The following concerns about the Cloud model have been addressed.

All data over the Internet can be encrypted using TLS/SSL.  Security is actually improved because the private keys will be safe in the service center and will no longer be in the laptops.

The Cloud mode uses the site's existing WiFi infrastructure.  It will not interfere with the FMS 5 GHz WiFi field transmissions.

GMS does not need high bandwidth throughput or instantaneous responses.  GMS retries communications until it succeeds.  The Cloud model may be a bit slower, but will be quite acceptable.

In the last few years, most schools have installed Internet enabled WiFi access for students and staff.  This will be quite adequate.  Most of the large convention centers already have the WiFi infrastructure, though there may be an extra charge for its use.