[lathiat]

SATA also has multiple I/O queues. It’s called “NCQ”

The exact semantics vary per protocol but it’s a feature of most protocols at least in the currently used revisions: https://en.wikipedia.org/wiki/Native_Command_Queuing

[wtallis]

That's one queue per drive. NVMe allows multiple queues per drive, commonly used to assign one queue per CPU core.