Hi Karen,
I'm not a tech expert, but you can backup google drive by downloading the files to an external hard drive or your desktop.
I haven't used it in a while, but i'm pretty sure you can also use google drive for desktop and sync G drive with your computer, and then back them up when you backup your computer.
Sheila
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Sheila Segurson, DVM, DACVB
Board Certified Veterinary Behaviorist
Director of Community Solutions
Maddie's Fund
Pleasanton CA
9258608284
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