[SunHELP] How to tell if Sombra CPU's are installed?

[Hichael Morton]

Sombra CPUs can be ordered from Sun to replace regular CPUs
(particularly if your regular CPUs are having the e-cache parity
errors).  That is, the Sombra CPU is a FRU (field replacable unit) and
can be ordered individually.

If you have a service contract, you can also have the regular CPUs
upgraded to the Sombra CPUs.

(We did this to at least one of our E6500s.)


Hope this helps,

HM


Dale Ghent wrote:
> 
> On Thu, 7 Mar 2002 echase at postoffice.providence.edu wrote:
> 
> | I'm far from an expert on Sun hardware, but what the heck is a Sombra CPU
> | versus a "regular" CPU?
> 
> Sombra CPUs are the UltraSPARC-II CPUs Sun produced for the x500 series of
> servers to combat the infamous e-cache parity errors that plague us2 CPUs
> that run above 400Mhz with certain e-cache SRAM chips.
> 
> These CPUs have mirrored e-cache, and are actually supplied on a whole
> x500 CPU/Memory board... that's how you get it from Sun... no
> removing/adding them to existing CPU/Mem boards.
> 
> There's no way I'm aware of to identify them on a system from the OS
> (short of pulling out the board itself and looking at it.) It does require
> OBP version of at least 3.2.28, so that's the only almost-uncertain thing
> you could go on.
> 
> /dale
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