Issue with drives not being seen

AeroXero42 · 17. Juni 2020

Hello! I have bought some parts to put together a NAS for my small business and have been having issues with it.

I have bought a J4105 embedded ITX mobo, 8gbs of RAM, a M-140SS-ITX 1u case, sas to sata breakout cable, and 4 4tb WD Reds.

I have OMV5 installed and set up, now im trying to add the drives in software but OMV doesnt see them. Ive restarted, checked connections, re-seated everything and still nada.

Any help is appreciated.

cabrio_leo · 18. Juni 2020

This mobo has 4 SATA connectors, combined with 4 WD RED drives also with SATA connector. For what do you need the SAS to SATA breakout cable?

Did you see the drives under "physical disks"?

gderf · 18. Juni 2020

You have made a fundamental mistake.

Your case has a miniSAS backplane with one SFF-8087 connector on it. You plugged the SFF-8087 plug on the breakout cable to this backplane connector and then connected the cable's four SATA data connectors to the SATA ports on the motherboard. This will not work.

If you carefully read the description of the cable it is for connecting a SAS controller SFF-8087 port to a four port SATA or SAS drive backplane. This is known as a "forward breakout cable."

Your application requires a "reverse breakout cable" like this one:

https://www.amazon.com/Cable-M…out&qid=1592493834&sr=8-1

You have a choice of length for this item. Get the short one if it will reach.

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