WIFI NDAS disk speed check

Discussion in 'Mac Basics and Help' started by marmi, Feb 1, 2008.

  1. marmi macrumors newbie

    Jan 31, 2008

    New to the forum and to Macs, I would like your suggestions and ideas on a particular issue in which I am a little bit lost. Sorry for the English as well, not a native speaker.

    I have a multimedia player, a Rapsody N35, which works as a NDAS disk, connected to a wifi router downstairs. I can mount and read/write the N35 disk from my iMac upstairs and even stream contents from it. However, the speed at which the files are copied to the disk via wifi seems to me a little too slow. It takes approximately 6-7 minutes to copy a 700Mb Divx movie.

    The question is that I have been having problems with the configuration of the ADSL and wifi routers, and I do not know if this speed is what I should expect as a limitation of the wifi transmission ("g" standards) or there might be a firewall issue and I should expect something faster. Is there an easy way to test the real transfer speed of the communications imac/N35? and to guess if they are as good as they can?. Would there be some way to make the communication faster withoug wiring?. Thanks in advance
  2. killerwhack macrumors regular


    Aug 5, 2004
    Los Angeles, California
    700 megabytes in 7 minutes means that you are getting 100 megabytes per minute or 800 megabits per minute. 800/60 = 13.3 megabits per second sustained. with an 802.11/g type wireless, a typically advertised rate is 54 megabits per second so you are at about 25% of your theoretical max.

    This could be impacted by a lot of different factors. The NAS may be performing poorly. Your wireless situation may be degraded due to interference or distance.

    One thing to check. If you can adjust the packet size output by the NAS, make it as big as possible. 8192 bytes if you are able to.

    Hope this helps.
  3. marmi thread starter macrumors newbie

    Jan 31, 2008
    Thank you. Apparently there is not problem in the wi-fi connection and definitively I don't know how to adjust the packet size output, if at all possible. The NDAS driver does not seem to allow any kind of adjustment.

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