Which OS to choose to run VirtualBox on 5-10 machines?

Question

virtual box

There is a task to launch about 10-20 virtual machines.
One chrom browser tab will work in each guest, this is about the load.
The question is, on which OS is it better to deploy the host and which OS is better to choose for installing the guest.
Of course, I would like to get maximum performance with a minimum of iron.
Thanks

Answer 1

linux,
of course, in 99% of cases, even virtualization is not required, since there are much more opportunities and options for this OS.
Why do you need virtual machines to run chrome? if you want all running applications to be active, it is enough to run many xvfb virtual xservers and connect to them as needed using vnc, and there is also xephyr, a version of a full-fledged xserver that runs inside the specified window.
ps firefox works regardless if the tab is active or not

Answer 2

Host - Windows 10.
Virtual - Windows 7 with embellishments trimmed to zero.
And no hemorrhoids.

Answer 3

You can use sandbox instead of virtual machines ...
But in general. Debian/ubuntu, KVM on it, inside debian/ubuntu with lxde/xfce slave table

Answer 4

The one you are used to, which you can easily install and manage

Answer 5

In chrome itself, you can make accounts