Summary: ent. 450, SYM22801 and A1000 problem

hello all,

thank you for your answers!

"The controller used to support the 8 port backplane in the E450 is a
Single Ended SCSI controller NOT Differential as the A1000 requires."

Thanks to Tony Walsh, Steve Camp, Christophe Dupre, Jed Dobson and Paul
Richards

Stoyan Angelov


----- Original Message -----
>
> Stoyan Angelov wrote:
> >
> > hello all,
> >
> > i have recently obtained a Sun Enterprice 450 server. it has the
> > additional 8 port backplane installed and a dual channel differential
> > scsi adapter attached to that backplane ( SYM 22801). everything works
> > fine with that configuration (scsi is recognized at the installed slot,
> > obp tests pass, disks are working, etc). however i have an A1000
> > storedge raid that i want to connect to the server and i have decided
> > not to use the additional backplane and to use it's scsi differential
> > controller for the A1000. i have disconnected the internal cables, all
> > the jumpers on the scsi bord are not connected, pis switches are all set
> > to off - at the moment that i connect the A1000 to either one of the
> > external channels of the controller board the "scsi fault" lamp on the
> > A1000 turns on and the disks will not even start to spin. this will also
> > happen if the server is not powered at all. A1000 raid works if
> > connected to another machine.
> > in the A1000 documentation it says that it requires sun diff. scsi
> > controler X6541A -> that is SYM22802 according to the sun handbook......
> > mine is SYM22801 with the internal 68ping, internal 50 pin and ext.
> > VHDCI connectors... could that be the problem ?
> > can you please give me an idea of what the problem could be ?
> >
> > thank you for your time !
> >
> > Stoyan
> >
> > ____________________________
> > Stoyan Angelov
> > filibeto.org
> > e-mail: s_angelov@filibeto.org
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