Hi,

>> I think the T3-4 server has it's internal disks split across 2 controllers, 
>> so you
>> can have dual i/o domains without having a external storage for the boot 
>> disks.
>> At least I hope so, we have some on order :)

> Correct.  It is the only one of the T3 based servers to have this feature.

OK, it is clear from the Oracle's SPARC T3-4 server motherboard design found
on page 28 of the "Oracle's SPARC T3-1, SPARC T3-2, SPARC T3-4 and
SPARC T3-1B Server Architecture" white paper that 4 SAS HDD are addressed
by the PCIe Switch 0, and the other 4 SAS HDD are addressed by the PCIe
Switch 3.

But on the same white paper, the Oracle's SPARC T3-1 server motherboard
design found on page 22 suggests that up to 16 SAS HDD are addressed by
the PCIe Switch 0, and by the PCIe Switch 1 through 2 SAS Controllers, but
interconnected to a single SAS/SATA Expander.  I am not sure about the
interpretation of the 8 other SAS HDD on the bottom left.  Do you think that
the T3-1 permit us to have 2 I/O domains with only internal storage as for the
T3-4 ?

--
julien.
http://blog.thilelli.net/
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