Date: Mon, 18 Jun 2007 08:25:35 -0700 From: "Matthew Jacob" <lydianconcepts@gmail.com> To: "Scott Long" <scottl@samsco.org> Cc: freebsd-scsi@freebsd.org, emaney <smsrks2007@gmail.com> Subject: Re: simple SCSI question Message-ID: <7579f7fb0706180825wc4a58c1g88d858bbec50d8fb@mail.gmail.com> In-Reply-To: <467697A8.3080503@samsco.org> References: <11169093.post@talk.nabble.com> <467697A8.3080503@samsco.org>
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*cough* www.t10.org - t11 is for fibre channel (t13 for ata) :-) On 6/18/07, Scott Long <scottl@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@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-scsi > To unsubscribe, send any mail to "freebsd-scsi-unsubscribe@freebsd.org" >
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