Ming, thanks for the clarification :)
--- Ming Zhang <mingz@xxxxxxxxxxx> wrote:
> On Sun, 2006-01-08 at 10:39 -0800, Rik Herrin wrote:
> > Hi Ming,
> > In a previous post, I had asked the following
> > question:
> > >> Are there any issues related to multiple
> initiators
> > accessing the iSCSI target at the same time?
> > and your reply was:
> > > Mainly depends on u HW, especially u disk.
>
> >
> > You then said in your last mail:
> > >"iet will not support MC/S."
> > Are you referring to multiple connections from the
> > same initiator or multiple initiators on different
> > PCs? Thanks for your time.
>
> :P
>
> try to give a summary here.
>
> 1) multiple ini access different targets on same iet
> box at same time.
> no data concurrency issue. the performance totally
> depends on your HW.
> of course, IET can be improved to support large # of
> ini better
>
> 2) multiple ini access same targets on same iet box
> at same time. has
> data concurrency issue here, so need a clsuter file
> system or similar
> system at client side to coordinate.
>
> 3) one ini access different targets on one iet box.
> it will create
> multiple sessions and no data concurrency issue
> here. performance issue
> depends on HW.
>
> all these are MS&OC/S (Multiple Sessions& One
> Connection per Session)
>
> 4) one ini access same target on one iet box.
>
> it might try to use multiple connection in one
> session (MC/S, Multiple
> Connection per Session), but iet doesnot support it
> and in parameter
> negotiation, iet stick to MaxConn=1.
>
> it might try to create multiple sessions with same
> target (still one
> connection per session), which is allowed. usually
> this is controlled by
> client software, for example, linux multi-path.
>
>
>
> >
> >
> >
> >
> > __________________________________________
> > Yahoo! DSL â?? Something to write home about.
> > Just $16.99/mo. or less.
> > dsl.yahoo.com
> >
>
>
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