OneAgent files and disk space requirements on Windows

This page provides information about the OneAgent directory structure and disk space requirements for OneAgent full-stack installation and updates. Note that exact values may vary based on OneAgent version.

Full-stack and Infrastructure Monitoring mode

The same disk space requirements apply to both Full-stack and Infrastructure monitoring modes.

OneAgent directories and their sizes

Default directory Can be modified?
Size of installation (with temporary installation files removed) ~1.1 GB %PROGRAMFILES%\dynatrace\oneagent Yes1
Persistent configuration ~5 MB %PROGRAMDATA%\dynatrace\oneagent\agent\config No
Temporary files, runtime configuration 200 MB %PROGRAMDATA%\dynatrace\oneagent\agent\runtime No
Logs 1 GB %PROGRAMDATA%\dynatrace\oneagent\log Yes2
Crash reports, memory dumps 3 GB %PROGRAMDATA%\dynatrace\oneagent\datastorage Yes3
Additional space required for updates 2.4 GB
Total 7.7 GB
1

Use the INSTALL_PATH installation parameter.

2

Use the LOG_PATH installation parameter.

3

Use the DATA_STORAGE installation parameter.

For a complete list of files and directories added to your system by OneAgent, see OneAgent security on Windows.

OneAgent files aging mechanism

OneAgent in full-stack monitoring mode uses a built-in aging mechanism to ensure that the OneAgent files, including log files and runtime data, are kept within a reasonable size. For more information, see OneAgent file aging mechanism.

How we calculate space required for installation and updates

When calculating the space required for installation and updates, we take into account the compressed EXE installer file size, the extracted MSI package, and the size of the installation process (the space required to deploy OneAgent files).

Size Description Removed after Claimed by Path
1 ~80 MB EXE installer downloaded by AutoUpdate OneAgent restart or next version installed1 AutoUpdate %PROGRAMDATA%\dynatrace\oneagent
2 ~520 MB Extracted MSI installer End of the installation OneAgent Installation %PROGRAMDATA%\dynatrace\oneagent
3 ~520 MB Extra storage for temporary installation files End of the installation OneAgent Installation %APPDATA%
4 ~520 MB Copy of the MSI installer saved by Windows Next version installed Windows installer %WINDIR%\Installer
5 ~520 MB Installed files Next version installed OneAgent Installation [Installation path]
Σ ~2160 MB
1

If you download the EXE installer manually, the installation process won't remove it.

Additional space required for installation and updates is calculated using the 10% safety margin:

(size of the installation process [2+3+4+5] + installer files size [1]) * 1.1

Required disk space for OneAgent installation and update on a single drive is ~2 380 MB calculated using this formula.

Note that the EXE installer is compressed, which explains the difference in size in comparison to the MSI installer.

In terms of space requirements, there's no real difference between manual installation of the new version (when an older version is already installed), automatic update, and updates that are triggered by restarting the OneAgent container. In all these cases, the installation process is performed exactly the same way. What differs is the method through which the update is triggered.