simple SCSI question

[Matthew Jacob]

*cough*

www.t10.org - t11 is for fibre channel (t13 for ata)

:-)

On 6/18/07, Scott Long <scottl at samsco.org> wrote:
> emaney wrote:
> > iam a student and new to SCSI, i have a question please someone help me to
> > get the answer for this
> > following question
> > how an 'initiator' on a SCSI bus identifies the logical entity with which it
> > wants to communicate?
> >
> > can anyone help me with this question, iam not getting whats is logical
> > entity
>
> A parallel SCSI initiator will do two steps to identify the "logical
> entity" that it wants to talk to.  First, it'll select the target by
> raising a signal on one of the 16 data lines.  Once the target has
> responded, the initiator will send a series of 1 or more message bytes
> that identify the LUN inside the target that the upcoming command is
> for.  This is a gross simplification of how the SCSI wire protocol
> works, and I suggest reading some of the docs on www.t11.org for more
> information.
>
> Scott
>
> _______________________________________________
> freebsd-scsi at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-scsi
> To unsubscribe, send any mail to "freebsd-scsi-unsubscribe at freebsd.org"
>