Sas backplane to motherboard sata

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gtech1

Member
May 27, 2019
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I have a Supermicro SC113ac2-706 chassis with 12gbls sas connectors on the backplane.

I am trying to connect it directly to an x11srm-f motherboard which has 6 onboard sata ports via a sas to 4 sata ports via a sas breakout cable.

The problem is that I'm not seeing any of the drives in the bios. What am I doing wrong ?
 

Rand__

Well-Known Member
Mar 6, 2014
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You'll need a reverse breakout cable for that.
And o/c you need to use SATA drives;)
 

nthu9280

Well-Known Member
Feb 3, 2016
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San Antonio, TX
There are two types of SAS break out cables - Forward & Reverse.
You need reverse break out cable as you are going from 4 SATA ports on the Mobo to one SAS connector on the back plane.
 

Rand__

Well-Known Member
Mar 6, 2014
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For example.
It should say reverse breakout

That one would be used to connect HBA to a TQ backplane or directly to drives
 

gtech1

Member
May 27, 2019
78
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8
Just a quick update...Supermicro was slow to deliver and I bought this one from Amazon:


didn't work. Should have read the reviews which has people complaining that it's not really reversed.

Will wait for the Supermicro one
 

itronin

Well-Known Member
Nov 24, 2018
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Denver, Colorado
Needs to say SFF-8643 Target and 4xSATA Host. The description says (Reversed) but is correctly identifying the host connector type and target connector type.

Plenty of options SFF-8087 Target to 4xSATA Host. Not so many SFF-8643. The SM is a good choice works well - I use this connecting a direct backbplane to SATA ports on a dual node D1541 board. I think I found those cables on the bay though ~10.00/cable shipped USPS priority.

SM just doesn't ship that quickly and if you want overnight or 2-Day be prepared to pay FedEX consumer rates ($$$$).