On 03/02/2013, at 6:25 AM, arcarlini at
iee.org wrote:
Jeff Jonas [jeffj at
panix.com] wrote:
Long ago when SCSI was young
and just an 8 bit parallel bus,
Ampro littleboards advocated using the SCSI bus
for peer to peer communications, not just master/slave.
Did anyone else do that?
I don't remember the details but I'm fairly sure you could run
OpenVMS clusters over SCSI at some point. I don't recall
whether this was "just experimental" or whether it was
actually supported in some configurations.
Fully supported on OpenVMS/Alpha with the appropriate adapters - I certainly set up more
than one such cluster. IIRC it's recently been qualified for Integrity as well.
Being OpenVMS the disks are shared active/active between the two nodes, all you had to do
was set the SCSI ids of the two controllers to a different value (suggested was 7 for one,
6 for the other).
Huw Davies | e-mail: Huw.Davies at kerberos.davies.net.au
Melbourne | "If soccer was meant to be played in the
Australia | air, the sky would be painted green"