@Matt Thank you for your interest in NAKIVO! The NAKIVO software does not support AWS Glacier in the current version.
The best way would be to generate and send a support bundle ( https://helpcenter.nakivo.com/display/NH/Support+Bundles ) to email@example.com so our Technical Support team can investigate it and forward your feature request to our Product Development team for possible future implementation.
Feel free to let us know if there is anything else we can assist you with, and we will get back to you. We are looking forward to hearing from you.