eSATA Controller And RS3614xs+

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eSATA Controller And RS3614xs+

Unread post by guillaumesoucy1 » Sun Sep 28, 2014 1:37 am


It is possible to add an eSATA controller in one of the two PCIe 8X port of the RS3614xs+, I know I can plug an PCIe 8X 10 GbE NIC but will an eSATA controller will work too?



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Re: eSATA Controller And RS3614xs+

Unread post by erdnuesse » Mon Nov 10, 2014 3:12 pm

Hi Guillaume,

just so, that you know what you're dealing with here: I am not a synology tech team member. There is one thing I can assure you though: you don't have two PCIe x8 ports. You have only one. The other one is x4.
Not sure about that? I have two RS3614xs+ here and I wanted to create HA with redundant switches via 10GbE and a redundant HB via 10GbE and found a little flaw...

Well, there's basically three things to prove:
  1. Open your box and take a look on the slot on the inside, there goes the (white) x8 slot. The other one is clearly labelled as x4. Sad but true.
  2. You could even check your logfile, if you had a card installed which clearly needed x8 (such as the supported dual port 10GbE Adapters).
    The logfile clearly says (Check the "Width"):

    Code: Select all

    [   12.740763] ixgbe 0000:02:00.0: (PCI Express:5.0GT/s:Width x4) a0:36:9f:4f:30:44
    [   12.924663] ixgbe 0000:02:00.0: eth6: MAC: 3, PHY: 3, PBA No: G45270-003
    [   12.931356] ixgbe 0000:02:00.0: PCI Express bandwidth of 16GT/s available
    [   12.938130] ixgbe 0000:02:00.0: (Speed:5.0GT/s, Width: x4, Encoding Loss:20%)
    [   12.945251] ixgbe 0000:02:00.0: This is not sufficient for optimal performance of this card.
    [   12.953669] ixgbe 0000:02:00.0: For optimal performance, at least 20GT/s of bandwidth is required.
    [   12.962607] ixgbe 0000:02:00.0: A slot with more lanes and/or higher speed is suggested.
    The other one says this right here:

    Code: Select all

    [Fri Oct 31 13:18:08 2014] ixgbe 0000:01:00.0: (PCI Express:5.0GT/s:Width x8) a0:36:9f:4f:30:44
    [Fri Oct 31 13:18:08 2014] ixgbe 0000:01:00.0: eth4: MAC: 3, PHY: 3, PBA No: G45270-003
    [Fri Oct 31 13:18:08 2014] ixgbe 0000:01:00.0: PCI Express bandwidth of 32GT/s available
    [Fri Oct 31 13:18:08 2014] ixgbe 0000:01:00.0: (Speed:5.0GT/s, Width: x8, Encoding Loss:20%)
    [Fri Oct 31 13:18:08 2014] ixgbe 0000:01:00.0: eth4: Enabled Features: RxQ: 8 TxQ: 8 FdirHash RSC 
    [Fri Oct 31 13:18:08 2014] ixgbe 0000:01:00.0: eth4: Intel(R) 10 Gigabit Network Connection
    Ouch. Still not sure?
  3. Read the QIG here: ... s+_enu.pdf
    on page 12.
Think about that, before you try to buy a card, that needs PCIe x8.
My guess is, I was the first to find out about that. Now they might be a little busy fixing things.


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