KZQSA and disks, was Re: MicroVax II question

From: Fred N. van Kempen <waltje_at_pdp11.nl>
Date: Tue Jan 6 12:27:53 2004

On Tue, 6 Jan 2004, John Allain wrote:

> Say what it was using. There's a big difference between reading a CD and
> writing a Harddrive.
No there is not, they are both SCSI random-access devices, contrast
to tapes, with are sequential-access devices. The SCSI layer uses
different I/O commands (and commands structures) for those two
classes of devices.

That said... I believe the KZQ doesnt do any (T)MSCP emulation, or
it has one that is switcheable (like the Emulex UC07/8). I have seen
it used with both classes of devices.

--f
Received on Tue Jan 06 2004 - 12:27:53 GMT