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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

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 https://en.wikipedia.org/wiki/Native_Command_Queuing

wtallis 3y ago
That's one queue per drive. NVMe allows multiple queues per drive, commonly used to assign one queue per CPU core.