eho@clarity.princeton.edu (Eric Ho) (03/13/90)
Someone told me that the Xylogics 7053 (Sun calls it SMD-4 ?) can handle both drives but SunOS might not. Just wondering if anyone has got any workarounds on this ? Also, just wondering if anyone has tried this config before :- System backplane | |<--- Xylogics 451 ----> 892 MB Hitachi dk-815 | | | ----> empty | |<--- Xylogics 7053 ----> 1.2 GB CDC Sabre | ----> empty | ----> empty | ----> empty I guess that with this config, you can still address the Hitachi as xy0 and the Sabre as xd0, right ? Eric Ho Princeton University eho@clarity.princeton.edu
keith@cs.utexas.edu (Keith Pyle) (03/14/90)
In article <5722@brazos.Rice.edu> Eric Ho writes: > >Also, just wondering if anyone has tried this config before :- > > System backplane > | > |<--- Xylogics 451 ----> 892 MB Hitachi dk-815 > | | > | ----> empty > | > |<--- Xylogics 7053 ----> 1.2 GB CDC Sabre > | > ----> empty > | > ----> empty > | > ----> empty As of just last night (more correctly early this morning), we have a configuration very similar to this. Instead of the Hitachi, we have a Fujitsu M2361, which has been our only drive on a 3/180. You can indeed address the drive on the 7053 as xd? and you can still address the drive on the 451 as xy0. We're able to do this - as long as we boot from the Eagle. We can even boot a little bit (is this like a little pregnant?) from the 1.2GB drive, up to the point where you would normally get the messages about 'root on ...' and 'swap on ...'. At this point, the 180 decides it's rarp time and starts asking who it is, instead. If we boot from xy0 with a kernel that simply knows of the xd device, everything is fine. We've got a call in to Sun, but no answer yet. If anyone has suggestions, please send me e-mail. If there is interest and this isn't the result of blatant 3 AM stupidity, I'll happily summarize the responses. One other comment: if you should decide to dump the 451 and put both drives on the 7053, you'll have to reformat the Hitachi as an xd device. Keith Pyle UUCP: ...!cs.utexas.edu!execu!keith Execucom Systems Corp., Austin, Texas Internet: keith@execu.com execu!keith@cs.utexas.edu keith%execu.uucp@cs.utexas.edu