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So there is a Windows VM for windows-y backup tasks that needs 10GB of RAM while the VM hostig around 20 containers uses only 4G

Thanks god we don't need to run windows on servers.

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Veeam WAS quite RAM heavy when it used Microsoft SQL, but they have updated it to PostgreSQL which has helped, and Veeam for Microsoft 365 uses a fair chunk too. But the reason it actually has 10GB of RAM is that it seems when restoring files through the Arq application, it caches to RAM, and having more RAM makes it much faster. I could probably move it down to 8GB no issue

Keep in mind that most of those containers are very light and are not really "Doing" anything, unlike everything in the Backup VM

And there is no way Windows actually needs all that RAM, either - there is only so much an OS can do, I feel like maybe a lot of code in Windows (probably userspace) copies and caches way too much.

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