Hi
Thanks for all the hints given so far.
Actually I have very little knoledge about SCSI configuration,
I have a scsi disks and two scsi adapters(adaptec)
can i set the disk with adapters in the following configuration:
[scsi adapter 1]<---->[scsi disk]<------>][scsi adapter 2]
i.e. A scsi bus (channel) originating at "scsi adapter 1" and
ending at the "scsi adapter 2" with scsi disk (or disks) connected
in between somewhere on the bus. Here I am trying to put all the
scsi devices on a single bus with the two adapters at extremes.
If this configuration is not right, please suggest me
some alternate arrangement of scsi adapters with a
single scsi disk.
TIA
sanjayk
On Fri, 06 Aug 2004 Learner wrote :
>Hi ,
>
> Well , it does work properly for me .
>
> I have worked on a Cluster setup having a scsi disk
>connected commonly between machines via a scsi adapter
>card installed on each machine .
>
>Cheers !
>
>
>--- debarchan dash <its_debarchan@xxxxxxxxx> wrote:
>
> > I think its possible. Using the fairness algorithm
> > for arbitration the adaptors can be decided. As you
> > told two adaptors are connected to a single SCSI
> > disk, in otherway two SCSI bus interfaced with the
> > same SCSI disk. So I/O operation is possible. The
> > main processor will decide on which bus data is to
> > be transmitted(i.e who should take control of the
> > bus) to the disk and accordingly as per the
> > algorithm the adaptor will be selected followed by
> > the same SCSI bus..
> >
> > cheers
> > debarchan
> >
> > sanjayk <tousanjay@xxxxxxxxxxxxxx> wrote:
> >
> >
> > Hi all
> >
> > If there is a system with a scsi disk and two scsi
> > adaptar,
> > then is it possible to perform IO operation on the
> > same
> > scsi disk using both the adapter.
> >
> > To my understanding:
> > *Each Scsi Adapter(HBA) can control one or more SCSI
> > buses.
> > *Each Scsi bus can have multiple SCSI devices
> > connected to it.
> > i.e a single scsi adapter control all the devices
> > connected to
> > a single bus.
> >
> > please correct me if i am wrong.
> >
> > TIA
> > sanjayk
> >
> >
> >
> >
> >
> > ---------------------------------
> > Do you Yahoo!?
> > New and Improved Yahoo! Mail - 100MB free storage!
>
>
>
>
>__________________________________
>Do you Yahoo!?
>Yahoo! Mail Address AutoComplete - You start. We finish.
>http://promotions.yahoo.com/new_mail
>
>--
>Kernelnewbies: Help each other learn about the Linux kernel.
>Archive: http://mail.nl.linux.org/kernelnewbies/
>FAQ: http://kernelnewbies.org/faq/
>
