while most commercial DVD-RWs contain 4. 7 GB, they can hold up to 17. 08 depending on the type. A single-sided, dual layer DVD can hold up to 8. 5 GB, while a double-sided single layer holds 9. 4 gb. Double sided dual layer discs hold the most, at 17. 08 gb. Most likely, single sided single layer discs are what you want.