Merge pull request #94107 from MGoedtel/UpdateAzMonVI1030

improved information about agent cache

Author: PRMerger17

articles/azure-monitor/platform/gateway.md

@@ -6,7 +6,7 @@ ms.subservice: logs
 ms.topic: conceptual
 author: MGoedtel
 ms.author: magoedte
-ms.date: 10/24/2019
+ms.date: 10/30/2019
 
 ---
 
@@ -18,7 +18,7 @@ ms.date: 10/24/2019
 
 This article describes how to configure communication with Azure Automation and Azure Monitor by using the Log Analytics gateway when computers that are directly connected or that are monitored by Operations Manager have no internet access. 
 
-The Log Analytics gateway is an HTTP forward proxy that supports HTTP tunneling using the HTTP CONNECT command. This gateway sends data to Azure Automation and a Log Analytics workspace in Azure Monitor on behalf of the computers that cannot directly connect to the internet. It does not cache data from the agents, the agent handles caching data in this situation until communication is restored.
+The Log Analytics gateway is an HTTP forward proxy that supports HTTP tunneling using the HTTP CONNECT command. This gateway sends data to Azure Automation and a Log Analytics workspace in Azure Monitor on behalf of the computers that cannot directly connect to the internet. 
 
 The Log Analytics gateway supports:
 
@@ -29,7 +29,7 @@ The Log Analytics gateway supports:
 
 Some IT security policies don't allow internet connection for network computers. These unconnected computers could be point of sale (POS) devices or servers supporting IT services, for example. To connect these devices to Azure Automation or a Log Analytics workspace so you can manage and monitor them, configure them to communicate directly with the Log Analytics gateway. The Log Analytics gateway can receive configuration information and forward data on their behalf. If the computers are configured with the Log Analytics agent to directly connect to a Log Analytics workspace, the computers instead communicate with the Log Analytics gateway.  
 
-The Log Analytics gateway transfers data from the agents to the service directly. It doesn't analyze any of the data in transit.
+The Log Analytics gateway transfers data from the agents to the service directly. It doesn't analyze any of the data in transit and the gateway does not cache data when it loses connectivity with the service. When the gateway is unable to communicate with service, the agent continues to run and queues the collected data on the disk of the monitored computer. When the connection is restored, the agent sends the cached data collected to Azure Monitor.
 
 When an Operations Manager management group is integrated with Log Analytics, the management servers can be configured to connect to the Log Analytics gateway to receive configuration information and send collected data, depending on the solution you have enabled.  Operations Manager agents send some data to the management server. For example, agents might send Operations Manager alerts, configuration assessment data, instance space data, and capacity data. Other high-volume data, such as Internet Information Services (IIS) logs, performance data, and security events, is sent directly to the Log Analytics gateway.