10x Chelsio T440 Quad port 10G SFP+

Discussion in 'Great Deals' started by Axam, Oct 29, 2018.

  1. Axam

    Axam New Member

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    #1
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  2. RobstarUSA

    RobstarUSA Member

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    Wow, are these picky on SFP+ or will any work? Is Linux support good for these?
     
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  3. BackupProphet

    BackupProphet Well-Known Member

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    Chelsio works great on Linux and FreeBSD, not picky either. Chelsio is a high quality brand.
     
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  4. Craash

    Craash Active Member

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    Odd question, but I'm planning my ESXi upgrade and I'm wondering on a multiport card like this, can you pass individual ports on the card to different virtual machines? Or can you only pass the card in its entirety?
     
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  5. azev

    azev Active Member

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    I dont have this particular card, but my passthrough experience with multiport nic card as such is usually done per card and not per port.
    ESXi register pci address per card and not per port. (I've done this on a few emulex and qlogic multiport card)
     
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  6. Craash

    Craash Active Member

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    I was afraid that was the case. Thank you very much for the response.
     
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  7. BLinux

    BLinux cat lover server enthusiast

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    i think what might be close to what you're looking for is SR-IOV.. i don't know if this card supports it...
     
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  8. zack$

    zack$ Active Member

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  9. oddball

    oddball Active Member

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    #9
  10. tjk

    tjk Active Member

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  11. oddball

    oddball Active Member

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  12. RobstarUSA

    RobstarUSA Member

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    These any good? Quad port for $25 (napatech).
     
    #12
  13. TangoWhiskey9

    TangoWhiskey9 Active Member

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    It's a gamble with drivers using a small brand.
     
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  14. Axam

    Axam New Member

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    The same seller. He changed original listing of 10x to separate items. They are actual NICs with good performance and drivers. Only downside is PCI-E 2.0.
     
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  15. azev

    azev Active Member

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    I wouldn't consider PCI-E 2.0 a downside, at 8x PCI-E 2.0 lanes x 500MB per lane, I say this product does push the limit of maximum throughput of a PCI-E 2.0.
    I have many Emulex dual port 10Gb deployed and they can easily saturate the 20Gb port.
     
    #15
  16. lambda

    lambda New Member

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    If I am not mistaken, Chelsio only support iWAPR instead of the more popular RoCE. However, their driver support on OS X is very good.
     
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  17. cesmith9999

    cesmith9999 Well-Known Member

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    in someways (lack of configuration) IWARP is better than RoCE

    Chris
     
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  18. Kingmer

    Kingmer Member

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    I bought ones of these, it was delivered yesterday - i put it in my server box, it was recognized instantly by server 2016 - used a copper SPF+ to hook it up to a microtek cloud swutch....basically to give my home server a 10gbs "backbone" to serve all of the houses 1gbs lines instead of usings 1gbs link agegation.

    The question: I have never used 10Gbs before, and everything seems to work - but i see alot of people reccommending fiber instead of copper...what do i lose by using the 3 meter copper SPF+ cable matters cable i bought from Amazon? If i wanted to use fiber i would need special connectors and fiber optic cables? How much is all that? The amazon cable was like 16$?
     
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  19. oddball

    oddball Active Member

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    You lose nothing by using a copper DAC. Copper is limited to 5m or so, beyond that you need a fiber run.

    You can buy active optical cables that have a built in transceiver with a fiber cable. The only advantage to fiber for short runs is the cables are thinner and more flexible. This doesn't matter as much at 10g, but at 40g it makes a pretty big difference in cable routing.
     
    #19
  20. fossxplorer

    fossxplorer Active Member

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    in which way?

     
    #20
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