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Question about the SGI Rackable SAS expander

K

kapone

n00b
Joined
Dec 2, 2012
Messages
31
I'm finally getting around to installing a few of these and doing some consolidating. I didn't get the whole JBOD chassis' from Rackable, but got a few of the expanders only. The expander seems pretty straight forward, but I just want to confirm, I'm not doing something stupid.. :)

1. Power connector - The expander has a 4 pin power connector that "seems" like a standard CPU power connector? Are the pinouts the same?

$_57.JPG


2. The 5 header banks - One is marked as serial port, which seems straight forward. I'm assuming the other 4 are for HDD activity LEDs that connect to the backplane? Each of these banks is 10 pin, which seems odd since you really need only 8 pins for LEDs for 4 drives. Am I missing something?

$_57.JPG


Any help is much appreciated.
 
Apologies to all on practicing my necromancy on this thread, but i think the information may be useful to someone who may stumble upon this page. The connector on this board will FIT a motherboard power connector (i believe it is keyed the same as a 12v auxiliary connector) but the pinout is NOT the same. This board must be fed 5v and 12v. Using the image above as reference, the two pins closest to camera would both be GND, the further pair would be 5V on top and 12V on bottom. Power pinout appears to be the same for rackable backplanes and 1u power supplies manufactured for rackable systems.

I have yet to figure out what J4 and CN_CPLD headers are for, has anybody lifted the heatsink and checked what chipset is installed under there?
 
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