Ted MacNEIL wrote:
Does anyone know if it is possible to have a disk device being accessed at
the same time by a 3990 control unit and a 2105 control unit?
It is not!
Differing technology.
Differing back-ends.
*It is possible*. BTDT. I used such (weird in fact) configuration on HDS
9960 machine. AFAIK emulation mode is set on the interface card, so we
had both 3390 emulation cards and 2105 cards.
Why ? 3390 interfaces were connected to former HDS 7700E, PPRC.
However AFAIR, it was also possible to access the devices directly from
host. Caution: the same device was defined *twice* (two I/O addresses)
in that case. It is impossible to define single device connected to two
different CUs.
--
Radoslaw Skorupka
Lodz, Poland
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