Advice needed SAS/MINISAS/Oculink

Discussion in 'RAID Controllers and Host Bus Adapters' started by csp-guy, Oct 30, 2019.

  1. csp-guy

    csp-guy Active Member

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    Hi Guys,

    I need some advice.

    I have a backplane in a server case with sata connection and SGPIO connection.

    Currently this has a cable SFF8087 -> sata and SPGIO connection cable.
    For example: Genuine Amphenol SFF8087 Reverse Right Angled to 4xSATA Cable 93cm w/ SGPIO | eBay


    This is good, if I have SFF8087 SAS connector integrated to my motherboard.

    But what can I do, when I will have oculink connectior on the motherboard?

    I have found oculink -> 4xsata cable, but I didnt found this type of cable equipped with SGPIO connection.

    Is it exists, or it is a dream?

    I do not want to use the PCIE slot to a SAS / SATA controller, i prefer oculink to sata, and I would like to see hdd leds blinking of hdd's, too.

    Thanks
     
    #1
  2. Rand__

    Rand__ Well-Known Member

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    Is OcuLink even compatible with Sata?
    I always associated it with NVMe...
    8643 can carry both nvme and SAS, but Oculink?
     
    #2
  3. Evan

    Evan Well-Known Member

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    Yep, you can get some Supermicro boards that support 4 x Sata breakout or 4x PCIe on OCuLink ports. X11SDV boards I know do.
     
    #3
  4. csp-guy

    csp-guy Active Member

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    #4
  5. Rand__

    Rand__ Well-Known Member

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    Yes I found that one too, but none with sideband, not even the 8643 ones...

    Maybe modern controllers can take over the functionality and take to the backplane via the drive interface? No idea to be honest, just guessing ;)
     
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  6. csp-guy

    csp-guy Active Member

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    My problem is, I have case with backpane 4 sata and sgpio connector, I have minisas cable with sgpio, but I want to buy mini itx motherboard and i would like to see operation of disk to be visible, so I need sgpio cabling, too. :)

    I have no decision yet about motherboard, so it is going to be interesting.
     
    #6
    Last edited: Oct 31, 2019
  7. Rand__

    Rand__ Well-Known Member

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    What specifically are u using the sgpio for?
    I thought it was for functions like locating disks or updating firmware on the backplane... but never really looked into it tbh
     
    #7
  8. csp-guy

    csp-guy Active Member

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    I think it is important for diagnosing issues with hdd and procedure of hdd identification in backpane, and using led blinking patterns.
     
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  9. Kev

    Kev Active Member

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    Isn’t there a sgpio header on SM motherboards?
     
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  10. csp-guy

    csp-guy Active Member

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    Nope, this is not needed. It is inside the cable, you have to push sas HD connector only to the motherboard.
     
    #10
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