The highest speed between NAS and local machines

  • Hello Gents,


    I have NAS on the Optiplex 990 (i5, 8GB, SSD PM83 OS, and 2x Samsung HD 154UI for files), and lan speed 1000. Right now I can copy files with 85-88 MB/s speed. I am wondering what should be the highest speed if i have:


    OMV OS SSD PM83 (sata III)
    2x HDD Samsung HD 154UI 5400 PRM, SATA II
    LAN speed: 1000


    Thanks.

    OMV - 6.3.1-1 (Shaitan)
    Kernel - Linux 5.16.0-0.bpo.4-amd64

    CPU i5-3570
    RAM 8GB
    HDD OS - WB BLUE 250GB
    HDD 2x Samsung EcoGreen F2 HD154UI 1500 GB (mirror) (max drive speed 107 MB/s)

    • Offizieller Beitrag

    Getting anything faster than sustained 115 MB/s is very difficult. The highest theoretical is 125 MB/s on gigabit. With the older 5400 RPM drives you have, you are probably getting the best result you can.

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  • roughly,
    lan speed 1000Mbps = 125MB/s
    most consumer hdd have 100MB/s sequential read
    (if you use raid 0 or similar, speed will be double, failure rate is also double)


    you cannot exceed 125MB/s if you share files via ethernet (bottleneck)
    there is also filesharing program overhead


    so.. I think your speed is normal


    ===
    changed unit according to @gderf's advice
    thx!

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    3 Mal editiert, zuletzt von luxflow ()

  • @luxflow - You should either spell out bits and bytes or use their standard abbreviations.

    --
    Google is your friend and Bob's your uncle!


    OMV AMD64 7.x on headless Chenbro NR12000 1U 1x 8m Quad Core E3-1220 3.1GHz 32GB ECC RAM.

  • @luxflow - You should either spell out bits and bytes or use their standard abbreviations.

    A small b is bits and a capital B is bytes, if you were talking about his Mbps statement.
    Or did I totally miss something.


    Also I hooked up my external usb to my windows machine and I'm transferring files to OMV at anywhere between 105 MB/s and 112 MB/s.
    When I mentioned my speed earlier, I had the external hooked up to the OMV computer.

  • A small b is bits and a capital B is bytes, if you were talking about his Mbps statement.Or did I totally miss something.

    What you missed is that he edited the post to reflect my comment about bits and bytes.

    --
    Google is your friend and Bob's your uncle!


    OMV AMD64 7.x on headless Chenbro NR12000 1U 1x 8m Quad Core E3-1220 3.1GHz 32GB ECC RAM.

  • Well, I have a NAS with 6 x 2.5" HD's a 2 TB and I have 1000er-Net. My Up/Downloadspeed is 118 - 120 MB/s ☺. The only problem is, I have changed my NAS from OMV to NAS4Free. A zfs-Raid is always faste than a Linux-Raid if you note the following:
    - use only Intel-Lan-Chips
    - Ram
    - more RAM
    - even more RAM
    And, zfs please nativ, not as a plug-in

    Zotac H55ITX-C-E Mainboard,
    8 GB RAM,
    i3-540 CPU,
    64GB Samsung 830 SSD,
    4x WD-GP 3TB (WD30EURS) Raid5,
    Chenbro ES34069 Server Chassis
    OMV 3.x

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