Merge pull request #79019 from bwren/am-cost-storage

Azure Monitor cost storage

Author: PRMerger13

articles/azure-monitor/platform/manage-cost-storage.md

@@ -11,7 +11,7 @@ ms.service: azure-monitor
 ms.workload: na
 ms.tgt_pltfrm: na
 ms.topic: conceptual
-ms.date: 06/03/2019
+ms.date: 06/06/2019
 ms.author: magoedte
 ms.subservice: 
 ---
@@ -103,11 +103,13 @@ The following steps describe how to configure how long log data is kept by in yo
 
 ## Legacy pricing tiers
 
-Subscriptions who had a Log Analytics workspace or Application Insights resource in it before April 2, 2018, or are linked to an Enterprise Agreement that started prior to February 1, 2019, will continue to have access to the legacy pricing tiers: Free, Standalone (Per GB) and Per Node (OMS).  Workspaces in the Free pricing tier will have daily data ingestion limited to 500 MB (except for security data types collected by Azure Security Center) and the data retention is limited to 7 days. The Free pricing tier is intended only for evaluation purposes. Workspaces in the Standalone or Per Node pricing tiers have access to data retention up to 2 years. 
+Subscriptions who had a Log Analytics workspace or Application Insights resource in it before April 2, 2018, or are linked to an Enterprise Agreement that started prior to February 1, 2019, will continue to have access to the legacy pricing tiers: **Free**, **Standalone (Per GB)** and **Per Node (OMS)**.  Workspaces in the Free pricing tier will have daily data ingestion limited to 500 MB (except for security data types collected by Azure Security Center) and the data retention is limited to 7 days. The Free pricing tier is intended only for evaluation purposes. Workspaces in the Standalone or Per Node pricing tiers have user-configurable retention of up to 2 years. 
 
 > [!NOTE]
 > To use the entitlements that come from purchasing OMS E1 Suite, OMS E2 Suite or OMS Add-On for System Center, choose the Log Analytics *Per Node* pricing tier.
 
+The earliest adopters of Log Analytics also have access to the original pricing tiers **Standard** and **Premium**, which have fixed data retention of 30 and 365 days respectively. 
+
 ## Changing pricing tier
 
 If your Log Analytics workspace has access to legacy pricing tiers, to change between legacy pricing tiers:
@@ -409,6 +411,11 @@ Specify an existing or create a new [Action Group](action-groups.md) so that whe
 
 When you receive an alert, use the steps in the following section to troubleshoot why usage is higher than expected.
 
+## Limits summary
+
+There are some additional Log Analytics limits, some of which depend on the Log Analytics pricing tier. These are documented [here](https://docs.microsoft.com/azure/azure-subscription-service-limits#log-analytics-limits).
+
+
 ## Next steps
 
 - See [Log searches in Azure Monitor Logs](../log-query/log-query-overview.md) to learn how to use the search language. You can use search queries to perform additional analysis on the usage data.