Can I use the BPN-NVMe3-216N-S4 backplane with any SC216 chassis?

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DRW

New Member
May 1, 2021
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The backplane has Oculink x4 (SFF-8611) connectors, not slimsas. So no.

As to why I want to use pcie switches vs direct attach, I think that's the same reason you use any kind of expander. I want some of my motherboard pcie slots for networking and other stuff. I also don't anticipate needing immediate access to every single drive, all at the same time.

Also my understanding is that switches are functionally retimers. I know gen 3 is less tricky as far as signal loss goes, but I doubt having something on the JBOF side cleaning up the signal is going to hurt me (and possibly is necessary).
 
Last edited:

awedio

Active Member
Feb 24, 2012
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My bad, I should have read the data sheet:
"The NVMe ports, designated CN1 through CN24, are used to connect the OCuLink cables."
 
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uldise

Active Member
Jul 2, 2020
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No, i don't. i have assembled some servers, but have no mind how to deal with these 24 cables, if you connect all of them.
 

Iaroslav

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Aug 23, 2017
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Which famous orange site are you referring to?;)
Sorry, was out a bit. It's serverschmiede.com
BTW, may be interesting for some
Looks like one may buy this SuperMicro 1028U-TR4+ 1U SFF Server w/ X10DRU-i+, DUAL PSU, AOC-UR-I4G, DUAL PSU | eBay
($250 accepted) and Supermicro BPN-SAS3-116A-N10 10-Bay 2.5" SFF 4x SAS3 10x NVMe Hybrid Backplane | eBay ( also $250 is ok) and then add original risers (4 port - cheap, 6 port - not) or some pci-e retimers, switches or whatever and build fast enough, up to 10 nvme system for reasonable price
 

DarthCirrus

Member
Dec 12, 2022
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pci gen 4.0 works on the N4 etc backplanes, which are older than this, so it should work

but yes ts, pleas try!
From reading/watching a lot of L1Techs content, seems like cables and adaptors with pcie gen 4 are quite finicky.

Sounds like you gotten other NVME backplanes with the OCuLink connector on the backplane to work at Gen 4 speeds - which cables worked? My plan was to order these SM cables….

 
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awedio

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Feb 24, 2012
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From reading/watching a lot of L1Techs content, seems like cables and adaptors with pcie gen 4 are quite finicky.

Sounds like you gotten other NVME backplanes with the OCuLink connector on the backplane to work at Gen 4 speeds - which cables worked? My plan was to order these SM cables….

What card/HBA did you plan to use?
 

DarthCirrus

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Dec 12, 2022
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My plan was no card to start - just the H12SSW-NTR since it has PCIE gen4 slimSAS connectors right up front close to the backplane for the first 16 drives.
 
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sash

Member
Nov 22, 2019
44
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8
I am putting together a system based on CSE-216 chassis. Just grabbed the last one on eBay for 350 and a new backplane from wiredzone. Planning to use these cables:
and

First one will go into three AOC-SLG4-4E4T cards and the last into two MCIO ports on the motherboard ASRock SPC741D8UD-2T/X550.
I will have to use ATX P4 to Molex 4-pin coverter cable to power the backplane https://www.sfcable.com/atx-p4-to-molex-4-pin-power-cable.html
Hopefully it will all work OOB and I would have no problems. I probably will be short one 8-pin 12V power connector for the motherboard.
 
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NPS

Active Member
Jan 14, 2021
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I am thinking about this for some weeks since I stumbled upon a CSE-216BE16-R920UB "new open box" really cheap.

I have a few questions:
  • Backplane: You always talked about the BPN-NVME3-216N-S4 in this thread. I would prefer the BPN-NVME4-216N-S4 found in AS-2114S-WN24RT. Any reason to stick to the older one except for price?
  • Power connectors: My case comes with an old PDB-PT829-S8824 and does not have the power connectors needed. Unfortunately the website for the AS-2114S-WN24RT seems to have many copy/paste errors. First of all the pictures are all from the older AS-2113S-WN24RT. Second it lists the same PDB but the backplanes have different connectors 4x 4pin vs 2x 8pin. Those 8pins are smaller than EPS but I only found cables to connect the power connectors on Supermicro Ultra/Hyper-style boards to this backplane.
  • Next thing is the compatibility of the PDB with the case. There is at least another style like the PDB-PT825-8824 found in 825/826 cases and as long as I don't know if the original PDB of AS-2114S-WN24RT will fit my case, I can't start shopping for parts because in the end this might break the built and I would resort to mimicking the older AS-2113S-WN24RT (PDB fits my case, cheaper mainboards in used market, cheaper retimer cards but not gen4)
I would really appreciate any info about the parts found in original AS-2114S-WN24RT! Other cables like I2C etc. could be helpful as well. Unfortunately the public documentation of these systems is much worse than for the Ultra/Hyper systems using the BPN-NVME4-216N-S4
 

sash

Member
Nov 22, 2019
44
8
8
I am thinking about this for some weeks since I stumbled upon a CSE-216BE16-R920UB "new open box" really cheap.

I have a few questions:
  • Backplane: You always talked about the BPN-NVME3-216N-S4 in this thread. I would prefer the BPN-NVME4-216N-S4 found in AS-2114S-WN24RT. Any reason to stick to the older one except for price?
  • Power connectors: My case comes with an old PDB-PT829-S8824 and does not have the power connectors needed. Unfortunately the website for the AS-2114S-WN24RT seems to have many copy/paste errors. First of all the pictures are all from the older AS-2113S-WN24RT. Second it lists the same PDB but the backplanes have different connectors 4x 4pin vs 2x 8pin. Those 8pins are smaller than EPS but I only found cables to connect the power connectors on Supermicro Ultra/Hyper-style boards to this backplane.
  • Next thing is the compatibility of the PDB with the case. There is at least another style like the PDB-PT825-8824 found in 825/826 cases and as long as I don't know if the original PDB of AS-2114S-WN24RT will fit my case, I can't start shopping for parts because in the end this might break the built and I would resort to mimicking the older AS-2113S-WN24RT (PDB fits my case, cheaper mainboards in used market, cheaper retimer cards but not gen4)
I would really appreciate any info about the parts found in original AS-2114S-WN24RT! Other cables like I2C etc. could be helpful as well. Unfortunately the public documentation of these systems is much worse than for the Ultra/Hyper systems using the BPN-NVME4-216N-S4
According to FAQ Entry | Online Support | Support - Super Micro Computer, Inc. the main difference is in hybrid drive support. I wonder if BPN-NVME3-216N-S4 can sustain NVMe4 drive speeds.
 

NPS

Active Member
Jan 14, 2021
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I wonder if BPN-NVME3-216N-S4 can sustain NVMe4 drive speeds.
I guess it will be more of an compatibility thing. Some drives probably won't link at gen4 at all with BPN-NVME3-216N-S4 and SlimSASx8 -> OCuLink cables. I want a system that works with a wild mix of drives so I am eager to avoid compatibility issues as long as its easily possible.

According to FAQ Entry | Online Support | Support - Super Micro Computer, Inc. the main difference is in hybrid drive support.
The backplanes have completely different connectors for data as well als power, so I guess the answer from Supermicro is simplified with a user in mind who wants to know what he can get on the highest level.
 

sash

Member
Nov 22, 2019
44
8
8
Put all hardware parts together and tested the system today. No issues! That is a great relief. Retimer cards are working fine with ASRock board with only BIOS bifurcation.
 
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