According to the Exchange 2013 Server Role Requirements Calculator, single item recovery must be enabled for Native Recovery to be an option.
If we have a DAG with the 3 required copies and a lagged copy located in a second data center, isn't that enough for protection, since we expect to only be able to recover an entire database? We have another solution in place for single item, a message archival appliance.
We are trying to get the required amount of disk space to a reasonable amount and eliminating the single item recovery option helps.
In the calculator, unless we select single item recovery, we get an alert on the Native Backup option. Can that be safely ignored?
Thanks for input on this. The calculator seems to want things its way only :-)