Quick ? for anyone with a SAS-846a backplane (supermicro)

Hi, I just swapped out my supermicro BPN-sas-846TQ backplane for a BPN-sas-846a backplane (i went from the backplane which has 24 individual sata inputs, to the backplane version with just 6 x SFF-8087 ports, feeding the 24x attached drives).


My question is about the Blue activity LEDs. on the 846TQ, the blue LEDs were generally off but would blink/flash based upon activity. on the 846A, the blue LEDs are ON, and flash/go off for activity (full activity is the blue led heavily dimmed, almost off, where as on the 846TQ, full activity was the blue LED shinning really bright and solid).

Can someone with a 846A backplane confirm what their drive activity LEDs show for disk activity.

thanks

They behave in the same way on my chassis with that backplane, so that seems normal.

Dang!@!@! is it just me or do other ppl much prefer it when the blue LEDs are off and then flash and adjust brightness according to each disk IO load. its so much easier to "read" and use for trouble shooting.

the way the 846A backplane does the blue LED is the exact opposite, its always on then decreases the Blue level based upon IO (so like 75% blue brightness is ~20% disk IO , 5% blue brightness is max'd disk IO, equivalent to the blue light being fully lit on the "TQ" backplane"

i was on the phone with supermicro for a good amount of time today and they really don't know what they are talking about... the tech was telling me its my raid card telling the backplane how to control the blue LEDs (which is not true, even when the "ribbon" SGPIO cable is connected...) I then told him that the Supermcro SFF-8087 cable im using has the SGPIO cable built in (i can see the freaking extra ribbon built in), he kept telling me to find the seperate ribbon cable and plug that in and that its impossible for the SGPIO cable to be buiit in to the SFF-8087 assembly (wrong)...