Does the auto_high_volume setting recommandations apply for a single indexer?

Hi, We typically say that if we index more than 10GB per day per index, we should put **maxDataSize = auto_high_volume** But does that apply to one indexer or the whole cluster? In other words, if I received 15GB per day for index "main", but I have 4 clustered indexers (**3.75GB per indexer**), should I still put maxDataSize = auto_high_volume? Thanks!