Using an eSATA connection to a StarTech 6gbps dock to do an initial checkout of a SATA III 6gbps 4TB drive.
Running dlgdiag write zeros test. Task Manager (Windows 10 Pro x64) show drive active 90% of the time, ~470 ms response time and ~14Mbytes/sec write speed.
It has been running for 15 hours and has 65 hours left to go.
Does dlgdiag write a sector at a time, a track at a time or a cylinder at a time. IOW, how many sectors are overwritten with each I/O?