COEN 180. Hard Drive Interface Evolution. Hard Drive Interface Evolution. Hard Drive Interface How does the system interact with the disk. Slow development towards autonomous, intelligent storage devices. Hard Drive Interface Evolution. ST412/506
Hard Drive Interface Evolution
LBA = (CylinderNumber*HeadCount+HeadNumber)*SectorCount + SectorNumber - 1.
Transmission of 1 bit followed by 0 bit on a single data line with a handshake protocol.
The initiator is the master in the function and the slave in protocol, the target is the slave in function and the master in protocol" (M. Schultz).
0 0 0 0 1 0 0 0
LUN DPO FUA Reserved Rel
Logical Block (LSB)