Merge pull request #264583 from RepinStyle/repinstyle-ama-prereq-diskspace

Add AMA diskspace requirements

Author: prmerger-automator[bot]

articles/azure-monitor/agents/azure-monitor-agent-manage.md

@@ -61,6 +61,20 @@ The following prerequisites must be met prior to installing Azure Monitor Agent.
   -	`<virtual-machine-region-name>`.handler.control.monitor.azure.com (example: westus.handler.control.monitor.azure.com)
   -	`<log-analytics-workspace-id>`.ods.opinsights.azure.com (example: 12345a01-b1cd-1234-e1f2-1234567g8h99.ods.opinsights.azure.com)  
     (If you use private links on the agent, you must also add the [dce endpoints](../essentials/data-collection-endpoint-overview.md#components-of-a-data-collection-endpoint)).
+- **Disk Space**: Required disk space can vary greatly depending upon how an agent is utilized or if the agent is unable to communicate with the destinations where it is instructed to send monitoring data. The following provides guidance for capacity planning:
+
+| Purpose | Environment | Path | Suggested Space |
+|:---|:---|:---|:---|
+| Download and install packages | Linux | /var/lib/waagent/Microsoft.Azure.Monitor.AzureMonitorLinuxAgent-{Version}/ | 500 MB |
+| Download and install packages | Windows | C:\Packages\Plugins\Microsoft.Azure.Monitor.AzureMonitorWindowsAgent | 500 MB| 
+| Extension Logs | Linux (Azure VM) | /var/log/azure/Microsoft.Azure.Monitor.AzureMonitorLinuxAgent/ | 100 MB |
+| Extension Logs | Linux (Azure Arc) | /var/lib/GuestConfig/extension_logs/Microsoft.Azure.Monitor.AzureMonitorLinuxAgent-{version}/ | 100 MB |
+| Extension Logs | Windows (Azure VM) | C:\WindowsAzure\Logs\Plugins\Microsoft.Azure.Monitor.AzureMonitorWindowsAgent | 100 MB |
+| Extension Logs | Windows (Azure Arc) | C:\ProgramData\GuestConfig\extension_logs\Microsoft.Azure.Monitor.AzureMonitorWindowsAgent | 100 MB |
+| Agent Cache | Linux | /etc/opt/microsoft/azuremonitoragent, /var/opt/microsoft/azuremonitoragent | 500 MB |
+| Agent Cache | Windows (Azure VM) | C:\WindowsAzure\Resources\AMADataStore.{DataStoreName} | 10.5 GB |
+| Agent Cache | Windows (Azure Arc) | C:\Resources\Directory\AMADataStore. {DataStoreName} | 10.5 GB |
+| Event Cache | Linux | /var/opt/microsoft/azuremonitoragent/events | 10 GB |
 
 > [!NOTE]
 > This article only pertains to agent installation or management. After you install the agent, you must review the next article to [configure data collection rules and associate them with the machines](./data-collection-rule-azure-monitor-agent.md) with agents installed. *Azure Monitor Agents can't function without being associated with data collection rules.*