What is VirtIO? Do I need this option?

Do I need VirtIO (appears in the settings when creating a droplet)? How affects this option on system performance? Does it reduces the speed of the server?

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I think VirtIO is interfering with my php uploads. I find it impossible to upload larger files. I have made all of the required changes to php.ini but still not luck. I have tried using nginx and apache. VirtIO seems to be the last variable to eliminate.

You might need to disable VirtIO if you’re using a program that’s not compatible with it. Usually you’re fine with VirtIO enabled.

Can you provide any specific examples where VirtIO should be disabled?