I'm sorry to hear you had such a difficult time with the upgrade. I do have a few questions about your experience. Your answers will help improve the documentation in the future.
1. Did you attempt to update your system temp variable? My understanding is that our installation uses this variable as the configurable location for temporary file expansion. By default, this variable is set to c:\windows\temp.
2. Was your original install also on the E: drive?
3. Can you explain what you are looking for as far as SQL disk space requirements? Many of the variables that influence SQL Server disk space depend on the version of SQL and internal data retention policies.
Thank you, and I do hope the rest of your upgrade goes more smoothly.
I am having this same issue trying to install the Orion Eval on a different drive other than C:\.
I specified to install to my D:\ drive using the Express and Custom install methods. Both methods confirm that they are going to install to my D:\ before continuing with the installation process. After that. Orion installs to the C:\ drive anyway.
Thank you for evaluating Orion NPM!
Please create a support ticket, and enter Orion Evaluation as the SolarWinds Application. Someone will get back to you soon to help you with your installation issue.