Citrix: Understanding Architecture and How User Gets Citrix VDI

As we all are used to working from home, we know how our organization restricts their employee to work in a secure manner irrespective of where are they. Citrix plays a major role to make life easy for organizations and keep its show running in any situation. Citrix is a popular tool that provides VDI (Virtual Desktop Infrastructure) to work from anywhere. They are experts in application and desktop virtualization, dedicated and shared VDI offering, and accessing through a thick and thin client. You can install workload on-premise, and Azure/GCP cloud. 

Today we are going to discuss the major components in Citrix architecture and the role of individual components. Additionally, we will learn about User VDI access flow.

How to delete old snapshots when original VDI are going to be removed ?

I installed Windows 7 on a guest machine in Virtualbox on my Linux Mint 18 host.
Installation OK, activation OK.
Then I tried to upgrade this guest from Windows 7 to Windows 10 I encountered some problems which rendered my installation useless. While I was working with these problems I created some snapshots so I had a fallback if something went really wrong.

Since I now had a digital right for Windows 10 for this virtual machine I decided to put up a new VDI so I could install a fresh copy of Windows 10 on this. Version 20H2 worked as it should and now I'm happy.. :-)

But: What shall I do with the old (original) VDI-disk and the snapshots on it ?
The whole thing is installed on a Samsung 970 EVO Plus 500 gb M.2 disk and I want to save as much space as possible without harming my new VDI.
Any suggestions ?
Virtuabox version: 6.1.16 r140961 (Qt5.6.1) and both the Extension Pack and the Guest Addons are updated.

Login VSI Releases New Open API

Login VSI, the provider of application performance testing and monitoring for VDI environments announced today the general availability of Login PI version 3.6. This release includes support for an industry-standard open API.