[Disksim-users] Some questions about some terms like device driver, controller , bus, disk. Thanks

[Evan Jiang]

Hello, I get some questions about some terms. Looking forward for your
reply ,thanks!
>From the view of storage system topology, device driver , controller, bus
and disk are presented. So I present my understanding:
1 device driver is the system software component that executes on OS
2 controller is the something like SCSI controller embed on PCI board, not
inside the disk drive. What the reference manual describes is this kind of
controller, not the controller inner disk drive. disksim_controller.c
describes it while disksim_diskctlr.c describes the controller circuit
inner the disk drive.
3 bus is the system bus or i/o bus.
4 disk, just is the disk drive.

I don't know whether I am right. Looking forward for your help! thanks.
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