Please HELP Questions to Support

Want to Ask If You Select a 30GB volume size and + sync with a slice then when the break is broken or when the power is off the load synchronization is resumed continues where everything is still swinging, and another question. If you select a volume of 30 gb, if the local file is changed to a 2Mb file, changed only 2 Mb of information is renewed or does it need to select a volume size for Less? to synchronize only 2Mb, what version of Duplicate recommend for important files? Thank you all in advance

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