On 20 Jan 98 08:24pm, Tom Ruddy wrote to Mike Bilow:
 TR>   Are PCI EIDE readily used for duplexing drives? As in low
 TR> cost servers? And is there enough of a cost savings (over
 TR> all scsi equipment) to justify using all EIDE hardware?
 TR> (With no thought given to any performance hits.)
 MB> I would not recommend EIDE servers for any number of
 MB> reasons.  I would also consider "low-cost duplexing"
 MB> to be an oxymoron.
 TR>   Understood. But the question is; Is it possible to duplex
 TR>   drives (two drives two controllers) using the EIDE interface.
 TR>   I would ASSuME you would be best off using a PCI EIDE
 TR>   controller for at least one controller to avoid using the
 TR>   secondary ports on most motherboards which usually sit on
 TR>   IRQ15.
 TR>   I wouldn't practice this. I am merely morbidly curious.
It CAN be done, however, you still have to follow the basic rule that
both controllers be identical hardware.  If using onboard controllers,
you must use both.  If using external adapters, both must be of the same
manufacture and model, to include bios revision (if bios driven).  Any
differing and the solution will either not work at all or you CAN expect
unpredictable results.
George
CNE4
... Abstain from wine, women, and song; mostly song.
--- Via Silver Xpress V4.4P [Reg]
---------------