Backup for large number of archived logs per hour

As an example, if we have a 200G DW generating 20G archived log per
hour, then what would be a more efficient way for backup?
 
It does not make sense to backup archived log when the entire DW is less
that the amout of archived logs generated.
 
We are currently not using RMAN, but BCV and snapshot are created at the
array level.
 
Thanks Michael.

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