Comment by preisschild

5 hours ago

I just wish they had 2x5GbE like the Orion O6. i/o heavily matters for my compute nodes.

I wonder if 802.3ad bonding can bring 5gbit/s

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preisschild

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adrian_b  5 hours ago

It says that it has four 10 Gb/s USB ports (2 Type A and 2 Type C).

It is unknown whether the ports are independent, or some of them or all of them are connected to an internal hub.

Even if they were connected to a single CPU port through an internal hub, if you used two 5 Gb/s USB Ethernet interfaces you would get close to full speed for them.

Having 10 Gb/s USB instead of the so-called "5 Gb/s" USB (in reality 4 Gb/s), provides much more additional I/O throughput than having 5 Gb/s RJ45 instead of 2.5 Gb/s. I agree that having 5 Gb/s Ethernet would have been nice, but it is much more valuable that it has 10 Gb/s USB, which is very rarely encountered on Arm-based computers.

  • preisschild  4 hours ago

    I wonder how well a usb 10gbit ethernet adapter would work then

    But I really apprecate your reply!

    I'll definitely buy one for testing when they become available for reasonable prices <500EUR for 16gig memory

    • adrian_b  2 hours ago

      10 Gb/s Ethernet interfaces work fine on 10 Gb/s USB.

      Both interfaces have almost the same raw bit rate (in both cases "10 Gb/s" is only an approximation, but the differences between the true bit rates and 10 Gb/s are negligible, unlike for "5 Gb/s" USB, where the data bit rate is only 4 Gb/s).

      The USB protocol has a slightly higher overhead than the Ethernet protocol, so the throughput of an Ethernet 10 Gb/s interface attached on 10 Gb/s USB will be a little lower than that of a PCIe NIC, but the difference is negligible, of only a few percent.

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modeless  5 hours ago

Seems like you could add that pretty easily via USB and/or M.2. Either should have the necessary bandwidth.

  • preisschild  4 hours ago

    I would use the m.2 e keys for sata and x4 m key for nvme ssds. That only leaves pcie gen3 x2.

    I want to run a distributed network storage (ceph)