On 03/04/2011 14:30, Julien Gabel wrote:
No because there is only a single PCI bus in a single socket and this cannot be split.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 ? The disks are indeed across two switches, but these are in fact in an active/passive configuration, in that only one switch can conteol the disks ats any one time. T -- julien. http://blog.thilelli.net/ --
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