The suffix is not a valid SolarWinds file extension. Official installers use .exe (Windows) or .bin (Linux Orion agents). .rarl implies a RAR archive , possibly split or renamed.
It seems like the software or the information about it is being shared or discussed under a username "--G-ddi--" and packaged in a .rar file. This could be a user sharing software, patches, or related files through a file-sharing method. The suffix is not a valid SolarWinds file extension
Monitors the health and performance of servers and applications. The suffix is not a valid SolarWinds file extension
These are all of SolarWinds Orion.
If you have this file:
The bundle consists of the following tools designed to work together on a single application server: Upgrading NPM and additional modules - SolarWinds THWACK 9 Jan 2018 — The suffix is not a valid SolarWinds file extension