note: this is a hidden cli argument.
raw details (from release v2.2.3):
{
"name": "accounts_db_max_ancient_storages",
"properties": {
"long": "accounts-db-max-ancient-storages",
"value_name": "USIZE",
"validator": "is_parsable::<usize>",
"takes_value": "true",
"help": "The number of ancient storages the ancient slot combining should converge to.",
"hidden": "hidden_unless_forced()"
},
"isDeprecated": true
}