topic Query: Unable to get 100g throughput in ProLiant Servers (ML,DL,SL)

Unable to get 100g throughput

xrkr — Mon, 15 Jul 2024 03:44:04 GMT

Hello All,

I have 100g card on my alletra storage servers. I did a iperf test between the nodes initially with switch in between, we were not getting more than 40gbps. The switch is clean with all it's ports reflecting 100g. We have connected back to back to check if there any issue on OS/server side, we are still getting Max of 40gbps. Not sure, if there is any problem on the rocky Linux 8.8 OS layer or the HW issue. Can someone guide here pls.

Re: Unable to get 100g throughput

TVVJ — Mon, 16 Sep 2024 09:35:43 GMT

Hello,

As the configuration of the switch ports have been verified, you may perform the following, if they have not already been performed:

Connect another server with working 100G NIC and see if it functions at that speed.
In this server, if a known working spare 100G NIC is available, please install it and check the result.

Also, if there are settings in the software to setup the bandwidth for the NIC is present, please verify if the bandwidth is set to 100G.

Regards,

Re: Unable to get 100g throughput

Cali — Mon, 16 Sep 2024 09:31:09 GMT

Hi,

be aware, that the 100G NIC need 16 PCI Lanes for full speed.
If the NIC is in OCP Slot you have to add the additional 8 Lane Cable.
But you don'r provide any Server configuration Info, so I'm unable to help further.

Cali

Query: Unable to get 100g throughput

support_s — Tue, 16 Jul 2024 14:17:52 GMT

Hello,

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Re: Unable to get 100g throughput

ScottReeve — Thu, 22 Jan 2026 14:57:41 GMT

Any suggestions on how to run iperf on an Alletra device?

I have a very similar situation.

Thanks.

Re: Unable to get 100g throughput

Thaufique_Mod — Fri, 23 Jan 2026 05:24:16 GMT

Hello @ScottReeve,

You can directly post your question in our Alletra board, so that the Experts / Peers can immediately respond to it. Simply click on the link or follow the steps to get into the HPEAlletra board and click on new discussion:

Link: HPE Alletra Storage

Steps to locate the bpard: Forum drop-down >> Storage >> Midrange and Enterprise Storage >> HPE Alletra Storage

Re: Unable to get 100g throughput

Cali — Fri, 23 Jan 2026 05:38:32 GMT

In my opinion, he is referring to Alettra 4000, because there is no 100GB NIC for Alletra Storage (B10000) today.
As Alletra 4000 is a server, it should be fine here.
However, since the Alletra Model is unclear, we are unable to help.
There are too many Alletra Systems out there, and the OS is also unknown.

It is better to open a new Task and specify the Model, OS, and provide additional information.

Cali

Re: Unable to get 100g throughput

ScottReeve — Fri, 23 Jan 2026 22:01:49 GMT

Product: HPE Alletra Storage MP
Version: 10.4.8.16

HPE Employee, btw.