BPN-SAS3-846EL1 NVME support

4U 24-Port LFF Expander Backplane support up to 16 SAS3/SATA3 and 8 SAS3/SATA3/NVMe Gen 4 Storage Media - BPN-SAS3-846EL1-N8-1

4U 24-Port LFF Expander Backplane support up to 16 SAS3/SATA3 and 8 SAS3/SATA3/NVMe Gen 4 Storage Media

Price $444.00

Supermicro

supermicro.com › manuals › other › BPN-SAS3-826EL1-N4.pdf pdf

BPN-SAS3-826EL1-N4 BACKPLANE USER'S GUIDE Rev. 1.0 A 1 E 5 H 5 1 A E H A C A C

NVMe1 and NVMe4. ... I2C#0, and J21 I2C#4. ... Figure 2-2. Rear Jumpers ... All connectors support SAS3. Connectors for SAS #9 through #12 are hybrid ports ... Figure 2-4. Front Connectors and LEDs ... Figure 3-1. BPN-SAS3-826EL1 Single Port Configuration

Serversappy

serversappy.com › bpn-sas3-846el1-n8

SUPERMICRO BPN-SAS3-846EL1-N8 Bay Backplane Nvme

The Supermicro BPN-SAS3-846EL1-N8 is a high-performance, 24-bay backplane solution designed for deploying NVME drives in data center environments. This backplane supports SAS3 (12Gb/s) interface, making it an excellent choice for applications ...

Supermicro

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reddit.com › r/homelab › bought a new case, have questions about sas hookup.

r/homelab on Reddit: Bought a new case, have questions about sas hookup.

October 15, 2022 -

Hey I recently bought a supermicro 36 bay server. A 847E16-R1400LPB if it matters. And had a question about the sas cables.

https://imgur.com/a/1Fp9nfm

From what I can see there's 4 hookups for the front backplane, and 8 on the rear with only 4 hooked up. With 4 free ports. And only 4 cables to plug into a raid card.

From what I can tell it looks like two of the front backplane cables goes to the rear backplane, with only two from each free to plug into a raid card.

I'm coming from a r710 so I'm still a bit of a newbie here. So just want to know if it's all good. I need to get new cables anyhow, as my gear is 8087. So I'll need to buy new cables. Just need to see if I need 4, 8, 12, or what's up.

Thanks for any and all help!

Top answer

1 of 2

so what you have there on the rear for your 12 bays is a BPN-SAS3-826EL1-N4. The backplane can have a total of 12 (LFF or SFF with adapter ) drives which can be a combination of 1-4 NVME (right hand bays as facing the bays - see manual linky above) and 1-12 (minus nvme drives) SAS or SATA drives. The white connectors for the nvme bays. each bay consumes 1 whole 8643 connected cable. As connected you have 2 SFF-8643 cables coming from the expander connections. SAS if you have a single 8 lane SAS-3 controller then the cabling is typically controller -> cable -> front expander backplane -> 1-2 cables -> rear expander backplane -> cable -> controller. you do this for redundancy and maximizing each block of 4 lanes to an expander. You can also come off each expander with a cable (depending on how many cables you use) to an SFF-8643 to SFF-8644 I/O bracket which would allow a jbod connection or potentially another host (depending on your software and configuration). NVME As a previous poster postulated those are indeed nvme SFF-8643 connectors. Each cabled connection correlates to 1 u.2 drive bay. Your typical u.2 drive is going to consume x4 pcie lanes (though there some that are x2 and some that are x2x2 (for dual connections). You have a few choices there. If you have say an lsi 9400-16i tri-mode controller you can use that to connect to all 4 nvme connections (in an x8 even. there's a plx switch chip multiplexing the u.2 connections to x8 pcie connections. You can also use something like a pcie slot to sff-8643 adapter card (re-timing chip recommended) or even what is bifurcated x8 or x16 to 2 or 4 x4. NB: you are direct connecting those u.2 drives to in all likelihood cpu pcie lanes. If you have unused m.2 slots on your motherboard you can also go the route of m.2 to SFF-8643 adapters. regarding your 8087 gear... that surmises SAS-2 - those expanders are backwards compatible. you'll need to get some SFF-8087 to SFF-8643 cables for your HBA to backplane connections. they exist. make sure you get ones that properly connect through the OOB management cable. Alternatively you could replace y our HBA with something like an LSI-9300-8i and just go SAS3 all around. If you have existing SAS2 drives the your controller will downgrade to sas 2 mode. they hybrid nvme sas3 expander backplanes are not common, not exactly rare, but not common. IMO that gives you nice flexibility for some high performance NVME drives mixed in with large cap spinners if you so choose. I'd pair that with a dual socket motherboard to give a maximum choice of lanes as 4 NVME drives consume x16 lanes... say you are also doing 10gbe, that's another 8 lanes, and your SAS controller is probably 8 lanes.... that's 32 lanes already consumed. if you have a nice HHHL GPU (T-P4/P4xx/P6xx) you can also slide a transcoding card in there but then you will have consumed all your lanes. :-( btw, nothing says you have to daisy chain the expanders. If you have a -16i sas2/3 card or a pair of -8i sas2/3 you could connect each card to a single backplane. If your drives are all large cap spinners you probably won't even see bandwidth degradation with an -8i controller. nice chassis btw. Loud though... very very loud!

2 of 2

What’s the backplane model? I think those are NVMe connectors.

Supermicro

supermicro.com › manuals › other › BPN-SAS3-846EL1-N8.pdf pdf

Revision 1.0 BPN-SAS3-846EL1-N8 Backplane USER'S GUIDE

BPN-SAS3-846EL1-N8 Backplane User's Guide · 2-2 · Connector Side Component Definitions · #1. - 4. HDD Connectors · The HDD connectors are designated SAS#0 · through SAS#23. These are for SAS3 and · SATA3 drives. SAS#16 through SAS#23 also · support NVMe drives.

Techyparts Store

store.techyparts.com › products › supermicro-cse-847be1c-r1k28lpb-4u-36-bay-chassis-2x1280w-bpn-sas3-846el1-nvme

Supermicro CSE-847BE1C-R1K28LPB 4U 36-Bay Chassis 2x1280W BPN-SAS3-846 – Techyparts Store

Supermicro CSE-847BE1C-R1K28LPB 4U 36-Bay Chassis 2x1280W BPN-SAS3-846EL1 NVMe

Supermicro CSE-847BE1C-R1K28LPB 4U 36-Bay Chassis 2x1280W BPN-SAS3-846EL1 NVMeSupermicro CSE-847E1C-R1K28LPB 4U Server Chassis with 2x 1280W PSUs, 24 x 3.5" Front, 12x 3.5" Rear hot-swap SAS/SATA Drive Bays with NVMe supportCondition: Off-lease equipment. Clean and tested by a qualified technician. Sold as pictured, no other accessories are included. Rail kit is not included. 36x 3.5" HDD trays and screws are included.Specifications:Form Factor: Supermicro CSE-847E1C-R1K28LPB 36x 3.5" Drive Bays 4U rackmount chassis 4U chassis support for max. motherboard size - 13.68" x 13" E-ATX, 12" x 10" A

Price $599.99

Wiredzone

wiredzone.com › shop › product › 10020429-supermicro-bpn-sas3-846el1-n8-24-port-4u-expander-backplane-supports-sas-12gb-s-16x-3-5in-hdd-and-8x-nvme-drives-7428

Supermicro BPN-SAS3-846EL1-N8 24-Port 4U Expander Backplane Supports SAS 12Gb/s 16x 3.5in HDD and 8x NVMe Drives | Wiredzone

Supermicro BPN-SAS3-846EL1-N8 24-Port 4U Expander Backplane Supports SAS 12Gb/s 16x 3.5in HDD and 8x NVMe Drives

reddit.com › r/homelab › what is the purpose of nvme backplanes?

r/homelab on Reddit: What is the purpose of NVMe backplanes?

March 31, 2024 -

I was looking at the Supermicro BPN-SAS3-826EL1 backplane, and came across the BPN-SAS3-826EL1-N4 which has some NVMe capabilities. When would this be useful? (I'm a bit of of date when it comes to disk technology). Are there 2.5" or 3.5" NVMe drives with a SAS connector? Is NVMe faster than SAS3? Do you need a special HBA to go with it?

Top answer

1 of 5

Are there 2.5" or 3.5" NVMe drives with a SAS connector It uses the U.2 connector which is physically compatible with SAS/SATA disks but adds new pins for the PCIe x4 link uses for NVMe drives. Is NVMe faster than SAS3? Very much so. SAS3 is limited to a theoretical max bandwidth of 12Gb/s bandwidth per drive, while U.2 (PCIe 3.0) is 32Gb/s per drive, and U.3 (PCIe 4.0) is 64Gb/s per drive. The NVMe protocol is also optimized for flash storage while SAS is designed around mechanical drives. Do you need a special HBA to go with it Each slot needs a PCIe 3.0 x4 connection, so it's possible to connect the backplane directly to a PCIe slot on the motherboard without using an HBA. This does have some downsides, such as hotplugging not always working reliably this way, or signal integrity issues with longer runs of PCIe. There are HBAs that can operate in "tri-mode" which can support SAS/SATA/NVMe on the same controller.

2 of 5

It problemly uses the U2 connector which is used to plug NVMe drives into a backplane.

Ahead-IT

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SUPERMICRO BPN-SAS3-846EL1-N8 / 24-Port 4U Expander Backplane Support up-to 16x 3.5" SAS3/SATA3 HDD/SSD and 8 x SAS3/SATA3/NVMe Storage Devices for sale at Ahead-IT

SUPERMICRO BPN-SAS3-846EL1-N8 / 24-Port 4U Expander Backplane Support up-to 16x 3.5" SAS3/SATA3 HDD/SSD and 8 x SAS3/SATA3/NV...

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Partschase

partschase.com › home › brand › supermicro › supermicro 24-port 4u expander backplane support up-to 16x 3.5" sas3/sata3 hdd/ssd and 8 x sas3/sata3/nvme storage devices bpn-sas3-846el1-n8

Supermicro 24-Port 4U Expander Backplane Support up-to 16x 3.5" SAS3/SATA3 HDD/SSD and 8 x SAS3/SATA3/NVMe Storage Devices BPN-SAS3-846EL1-N8

Supermicro 24-Port 4U Expander Backplane Support up-to 16x 3.5" SAS3/SATA3 HDD/SSD and 8 x SAS3/SATA3/NVMe Storage Devices BPN-SAS3-846EL1-N8

24-Port 4U Expander Backplane Support up-to 16x 3.5" SAS3/SATA3 HDD/SSD and 8 x SAS3/SATA3/NVMe Storage Devices

Price $0.01

TrueNAS Community

truenas.com › forums › truenas core › hardware and upgrades

Best Options for U.2 NVMe on ASROCK RACK Mobo with BPN-SAS3-EL1-N4 in CSE-826 | TrueNAS Community

August 3, 2023 - Also, those things tend to emulate SAS disks when attached to NVMe disks, absolutely negating much of the performance advantage. Fortunately, U.3 disks have to support U.2 backplane, so U.2 is better in every way. ... Click to expand... Are you sure? IIRC, the SoC supports this scenario, it'd be down to firmware setting the right bits. ... Click to expand... Wrong, not your fault, but crap marketing's fault. U.2 is literally the drive-side controller and nothing else. SFF-8643, as used for SAS3, is also popular for PCIe and in that role sometimes gets mislabeled as U.2, which it definitely is not.

Amazon

amazon.com › Supermicro-BPN-SAS3-846EL1-expander-backplane-connectors › dp › B01AKO0Q4U

Amazon.com: Supermicro BPN-SAS3-846EL1 SAS 12G single expander backplane, with LSI SAS3 expander, support 24x 3.5" SATA3/SAS2/SAS3 drives, with 4x mini-SAS HD connectors : Electronics

Help others learn more about this product by uploading a video!Upload your video ... Supermicro BPN-SAS3-846EL1 SAS 12G single expander backplane, with LSI SAS3 expander, support 24x 3.5" SATA3/SAS2/SAS3 drives, with 4x mini-SAS HD connectors

IT Creations

itcreations.com › product › 107018

BPN-SAS3-826EL1-N4 - Refurbished - Supermicro Hybrid PCIE NVME / SAS / SATA Hard Drive Backplane 3.5 Inch LFF 12 Bay

Supermicro Hybrid PCIE NVME / SAS / SATA Hard Drive Backplane 3.5 Inch LFF 12 Bay

for SUPERMICRO SUPERCHASSIS CSE-829 ( CSE-829HTS-R1K02LPB / SUPERSTORAGE SSG-6028R-E1CR16T ) - HDD BP LARGE FORM FACTOR 12B / 12LFF ( 12GB/S SAS / 6GB/S SATA SUPPORTED ON ALL BAYS / PCI-E NVME ON BAYS 9-12 )

Price $595.00

reddit.com › r/homelab › h13ssl-n mcio and bpn-sas3-846el1

r/homelab on Reddit: H13SSL-N MCIO and BPN-SAS3-846EL1

April 2, 2025 -

Was wondering what way is possible to connect my supermicro backplane BPN-SAS3-846EL1 to my motherboard.

I see that the motherboard (H13SSL-N) has 3 MCIO x8 ports. 2 are NVME ports with 2 channels each and 1 MCIO can be also be another 2 channel NVME or 8 channel SATA.

Is it possible to use a MCIO x8 to 2 x SFF-8643?

If that doesn't work, what should I use to connect my 24 Bay SATA drives in a JBOD configuration?