writes:
I was of the impression that the 4K sector business was to address(!)
the problem of disk capacity outrunning the addressing capacity of
the
Task File interface on IDE/PATA/SATA disks, evening with all the
funky
bit reassignments to squeeze out more address space and LBA tricks.
Current disks have LBA48, 48bit to address a sector. That's 128
Petabytes
(131072 Terabytes) with 512-byte sectors.
The above sounds like it's just a performance issue at the DAC level.
The larger sectors reduce per-sector command overhead and also squeeze
a few bits more onto the disk.