HBA to Backplane any benefits to using both connections?

[Mirfster]

Just was pondering if there is any significant benefit to connecting both Mini-SAS SFF8087 connectors to the backplane as opposed to just using one? Does one get more more lanes and increased speeds?

I have always connected both, but do know that it will detect all 12 drives with just one connected.

Now I am considering connecting a couple SSDs that are housed internally and was thinking of using one of the Mini-SAS SFF8087 connectors (with a breakout) for this.

BTW, I am using a Dell C2100/FS12-TY (anyone surprised?) with a H200 (cross-flashed to LSI 9211-8i in IT Mode)

 

[depasseg]

My guess is the the second connector is either for dual path (which requires dual port SAS drives), or daisy chaining to other backplanes. I'd be surprised if it would provide additional speed to the same drives.

 

[Mirfster]

Was thinking the same thing. May just give it a whirl and see. This is a test box after all.

 

[Sakuru]

I have a Supermicro SC846BE16-R920B and thought about this same thing. I'll try it some day :)