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What Sustained Disk Transfer Rates Do You Get?

Posted by Cliff on from the hard-drive-benchmarks dept.

Mr. Jackson asks: "What kind of disk transfer rates (MB/s) do people get in the real world when moving around large (100s MB) files? Either every machine in our building is mis-configured, or our notions about what we were getting are way off. I've tested half a dozen machines, mostly Win2k, some Linux, by just copying a large file and timing it with a watch. 8 MB/s seems to be about average for inter-disk copies. RAID 1 (stripped) got as high as 12 MB/s after fiddling with cache settings. RAID 5 was as low as 2 MB/s. We all thought the numbers should have been around 30 MB/s."

2 of 94 comments (clear)

  1. Copying from disk-to-disk, or over the network? by roachmotel3 · · Score: 2, Insightful

    We were shocked at some network file transfer speeds here -- if you are doing network copies and are shocked at how slow it is, make sure that your switch and your NIC agree about whether or not your connection is half- or full-duplex.

    Makes a HUGE difference.

  2. Mega-what? by itwerx · · Score: 4, Insightful

    What you're describing sounds about right, actually.
    Be sure you're keeping Mega-Bytes and Mega-Bits straight!