More stuff from the Sun rescue

[Sridhar Ayengar]

Dave McGuire wrote:
> On Oct 29, 2007, at 12:08 AM, Scott Quinn wrote:
>> There's also many boards for a (can't remember the name, it starts 
>> with "T" and is the ultra-high-reliability system that runs 2 or 4 
>> processors in parallel. Think it's PA-RISC, but can't recall for 
>> sure). I don't have them, but can pick them up tomorrow if anyones 
>> interested.
> 
>   Tandem?  If so, those will almost definitely be MIPS processors.

Refresh my memory how those worked?  Two processors in lock-step?  Three 
processors in a voting quorum?

Peace...  Sridhar