40GbE - will that hardware combination work?

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DeepB

New Member
Jul 25, 2019
15
1
3
Hello,

I am upgrading my homeserver to a 3-node CEPH+Proxmox HA-VM Cluster.

As 1GbE will probably be too slow for CEPH I am considering upgrading. 10GbE and 40GbE is not that big a price difference so I am thinking of going directly to 40GbE.
I am situated in Europe.

As my netorking experience stops at 10GbE-Fiber I have a few questions if my setup will work:

Central Switch: Mellanox MSX6025T-1SFS InfiniBand Switch 36x 56 Gbps FDR IB Ports 712495-B21 (~220€)
DAC Cables: Brocade 40G-QSFP-QSFP-C-0101 1.0m QSFP-QSFP Kabel (SAS) (~11€)
PCIe-QSFP-Cards: MELLANOX - MHZH29-XTR (~36€)
MTP-LC Breakout cable: LWL Breakoutkabel MTP auf LC Kabel, 1m, MTP Buchse auf 4 LC, OM4 BIF, Magenta
QSFP-Transceiver: Mellenox QSFP+ Modul | 40G QSFP+ MC2210411-SR4 40GBASE-SR4 Transceiver

My questions:
1) Does this setup work? Especially the combination DAC/Switch/PCIe-Card?
2) Can I use this transceiver with the Switch and a Breakout cable? So I can connect one qsfp 40GbE poprt to 4 SFP+ 10GbE ports?
3) Are there any alternative better/cheaper suggestions than the one above?

thanks
Daniel
 

Emek

Member
May 14, 2017
32
6
8
MSX6025T-1SFS is unmanaged Infiniband only.
You need 6012, 6018 or 6036 + gateway license if you want ethernet.

The cards are connectx-2. 3 is Better and not that
expensive.

The cables should be ok, but DAC would be cheaper.

I have some switches and cards if you're interested.
 

DeepB

New Member
Jul 25, 2019
15
1
3
I definately am interested, please let me know how much you want for them (by private message?)
 

DeepB

New Member
Jul 25, 2019
15
1
3
ok, thanks for the answer.

is there a list of all mellanox ethernet-capable swtiches somewehre?