RS3614xs+ wrong HW specifications

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Joined: Sun Apr 17, 2011 1:06 pm

RS3614xs+ wrong HW specifications

Unread post by erdnuesse » Tue Nov 11, 2014 12:12 pm

Hi @ all.

This thread is a duplicate of this one because I did not know where to put it in order to meet the guidelines.
Please merge them or delete the wrong one.
I also created a blog entry which can be found here.
Sorry for the inconvenience, but this issue is rather important, urgent and critical.

As stated before here the RS3614xs+ has listed wrong tech specs on the website as well as almost everywhere else. But for clarification here the full text.

This RS is on the market for about a year by the time of this post, and I could not find any information on the web, so I'm posting here.

First things first, my setup:

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Synology Model Number: RS3614xs+
Firmware Version Number: irrelevant
HDD Model Number: irrelevant
Number of HDDs: irrelevant
RAID Type: irrelevant
Network Bandwidth/MTU: 2 cards withe 2x 10GbE each. 
Services enabled: irrelevant
Hibernation time: irrelevant
External Devices: 2x 10GbE 8-Port unmanaged Netgear switch 
I have two of those listed devices here atm, for creating a 2-node cluster with Synology HA.

My Setup was planned as shown here:

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     |\  /|
     | \/ |
     | /\ |
     |/  \|
(So much for bbcode and fixed widths, can some admin fix that? It's always me to find the tiny flaws. ; ))
As you can see, I have a 10GbE HB bonded connection and one 10GbE planned to either switch for redundancy.

Got the boxes, set them up and faced multiple different issues.
I have had reduced net speeds on one of the four interfaces (shown with orange instead of greeen LEDs and the deactivation of either NIC in one of the two boxes, depending in which slot I put them.

Now, HCL is an issue for Vendors, I informed myself beforehand as you can imagine:
  • as listed here you can read
    Four 10GbE ports and SATA III 6Gb/s support
    In addition to the default 4 Gigabit ports, RS3614xs+ comes with dual PCI Express Gen3 x8 slots, allowing installation of dual 10GbE Network Interface Cards (NIC) for maximized bandwidth.
  • or here
    LAN Number (RJ45) Gigabit X 4 (supports 2 X optional dual-port 10GbE add-on card)
  • or here
    Intel Ethernet Converged Network Adapter X540-T2 X540T2 2 X 10GbE 10GBASE-T RJ45 PCIe 2.1 5.0GT/s x8
    which are the ones I purchased.
I opened several cases with my supplier for changing the NICs and even a case with synology for changing the whole box. The orange LED was gone, deactivation of one NIC persisted.

During the process I should download a logfile (.dat) to send to synology. Well this is what I did. I took a look inside for myself as well, (smart me ;) and I found several entries regarding my issues.

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ixgbe 0000:01:00.1: eth5: Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter
Starting with the overheating, which was the reason for the deactivation over time, which I already guessed before even looking at the log. The other entries regarding the NIC's really have gotten my attention, though:

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    [   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.
Now, what's that supposed to mean - PCI-E Width x4 ? Shouldn't it be x8 as stated above?
Looking a bit longer I found the other slot initializing the other card:

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    [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
Well, that's odd.
Now I started to investigate, before I did not have a reason to question synology, but merely troubleshooting network connectivity.
  • Why would your tech dept. write here on p. 12 one should add a PCI-E card in the white slot first for best performance, when they both are PCI-E x8?
  • Now, I have opened the box and made a photo:
    On the bottom left, you see the model number, the PCI-E specs on the right between the slots.

OUCH! I don't know wether he overheating comes from having too little bandwidth but this is just not what synology promises with advertising 2x PCI-E x8 and supporting 2x dual-port 10GbE.

I really am (was) a happy customer of synology products.
But unfortunately, reality hit me in the face with this one. Not meaning to be rude, it's just disappointing.

Please fix this issue asap. On your HCL, Website, with all suppliers and customers. My supplier, thomas-krenn already is in touch with european synology support, but this could mean a major recall program for all RS3614xs+ worldwide.



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