I have just obtained two hard drives which use 4k sectors, but report their physical sector size to the OS as only 512 bytes.
Does this mean that the OS must send eight requests to the drive to read 4k of data, whereas a true 4k drive could transfer the same amount of data with a single request?
Is there any performance benefit with that? Will it decrease system load, or improve NCQ performance, having to send fewer requests for the same amount of data?
Or do "real" 4k drives still use 512-byte logical sectors, so data will always be split into 512 byte chunks for transfer?