[Arm-netbook] EOMA server standard

[luke.leighton]

On Wed, Oct 24, 2012 at 7:13 PM, Dr. David Alan Gilbert
<dave at treblig.org> wrote:
> * luke.leighton (luke.leighton at gmail.com) wrote:
>> for the pin-outs i figured that at least one 10GBase-T interface (8
>> pins plus 8 GND spacers) would be acceptable, as would SATA-3 (4 pins
>> plus 4 GND spacers).  that's 24 pins already (!).  PCI-Express 4x is
>> 64 pins.  that's up to 88 *already*.  adding in USB3, it's not
>> unreasonable to imagine this would be a 100-pin standard.
>
> The problem with 10G is that there are at least 3 copper and 2 fibre
> standards to chose from, so chosing 10GB-t may not be right.  Most systems
> have SFP pluggable modules so you can chose the type you use.

 ahh, now that could be something to work with.

> While fibre is currently common, I think that's mostly because it's used
> for inter-rack/site mostly; but you don't need it for the machines in a rack.

 i'm kinda getting the impression that 10GbE is still complete
overkill (e.g. suited to inter-rack).

> There is an elwctrical standard for connction prior to the phy, I think
> that's xaui, I'm not sure if that's the same as the SFPconnections.

 XAUI's what the calxeda server SoC has.

l.