Automated Citrix CVAD Upgrade Script -- 2

I need a fully unattended Windows-friendly script that will upgrade our VDAs from Citrix CVAD 2402 CU3 to the new CVAD LTSR 2507 build. The installation files already sit in our Mumbai data-centre repository; your script simply has to pull them down to each target server, carry out the upgrade, verify success and reboot when finished.

Key flow I expect
• Disk-space check comes first – if free space is below a safe threshold, the run must abort and write a clear message to the log.
• Download the 2507 installer from the repository path I will supply.
• Launch a clean reboot so files are not locked, then resume automatically with no user interaction. Using RunOnce, Task Scheduler or another proven method is fine as long as I never have to log in manually.
• Perform a silent VDA upgrade (VDAWorkstationSetup.exe /quiet or similar).
• Validate all Citrix services start correctly – at minimum the BrokerAgent, ProfileManagement, DesktopService and Print service – and record the status.
• Initiate a final reboot once everything passes.

Logging & resilience
All activity and errors must be written to a local log file (simple text or CSV is okay). The script should exit with a non-zero code on any failure so our monitoring can pick it up.

Deliverables
1. PowerShell (preferred) or batch script with clear inline comments.
2. A short README explaining prerequisites, variables to edit (repository URL, log path, disk-space threshold) and how the auto-resume mechanism works.
3. Optional: a small test plan showing the checks you ran to confirm the upgrade is fully silent and recoverable after reboot.

If you have proven Citrix upgrade automation experience and can turn this around quickly, let’s get started.