USB drive

Discussion in 'Video Cameras' started by Mike Gasson, Jan 17, 2007.

  1. Mike Gasson

    Mike Gasson Guest

    Is a Lacie 7200 320gb USB 2 drive 'adequate' to capture from mini-dv or
    is it only good enough for storage after capture with the IDE drive? I
    believe USB 2 is 480Mb/s but I'm not sure what the 4200 drive would
    transfer at.
    XPH SP2 Athlon 64 3700+ 1gb memory 80gb 4200 HD.
    Thanks.
     
    Mike Gasson, Jan 17, 2007
    #1
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  2. Mike Gasson

    G Hardy Guest

    USB2 is 480Mb/s _maximum_
    Nevertheless, it's still about ten times faster than DV - you should be able
    to capture without any dropped frames. Make sure you have as few USB devices
    plugged in as possible, and that any that need to stay in (such as the mouse
    or keyboard, if applicable) are unused during capture.

    I've successfully captured firewire to USB2 HDD on a laptop.
     
    G Hardy, Jan 17, 2007
    #2
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  3. Mike Gasson

    :Jerry: Guest

    Two points, 1/. the drive should *not* take it's power from the USB
    port (it should be powered by it's own supply) and 2/. you don't want
    to be using any other USB device on that channel (at least) in case
    the data rate drops. Personally, IMO, the OP would be better thinking
    in term of a External HDD connected via a IEEE1394 (firewire) port if
    it's really impractical/impossible to use an internal IDE drive.
     
    :Jerry:, Jan 17, 2007
    #3
  4. Mike Gasson

    Mike Gasson Guest

    1. The drive has it's own power supply.
    2. I'm not sure what you mean by 'that channel'. I do have 2 unused USB
    ports on the laptop and 1 spare on a separately powered hub. In use are
    mouse, USB printer (rarely used) and another 40gb USB drive I use as
    backup.
    The firewire port will be in use to connect the camera for capture.
    Isn't a firewire connection slower than USB?
    Thanks.
     
    Mike Gasson, Jan 17, 2007
    #4
  5. Mike Gasson

    Mike Gasson Guest

    That is encouraging! Many thanks.
     
    Mike Gasson, Jan 17, 2007
    #5
  6. Mike Gasson

    Trev Guest

    USB ports come in pairs pluged into a Root hub on the board
     
    Trev, Jan 17, 2007
    #6
  7. Mike Gasson

    :Jerry: Guest

    So, in that case you only want the external drive connected, that
    inclued the hub (which counts as a device).
    No, USB2 can on paper (in theory) exceed the data rate of 1394a BUT in
    real life it doesn't.

    BTW, what is your IEEE1394 (firewire) port configuration, is it a
    single port on the MB or is it via a PCMCIA cardbus adaptor etc., if
    the former does the lap-top have a cardbus slot?
     
    :Jerry:, Jan 17, 2007
    #7
  8. Mike Gasson

    bertieboy Guest

    OK I see now, thanks.
     
    bertieboy, Jan 17, 2007
    #8
  9. Mike Gasson

    bertieboy Guest

    Just a firewire connector on the laptop, but there is a PCMCIA slot
    which I've never used. I'm not even sure how I would use it!
     
    bertieboy, Jan 17, 2007
    #9
  10. Mike Gasson

    :Jerry: Guest

    In which case, I suspect that you could gain another 1394 port with
    the right adapter, allowing you to use am external firewire HDD, might
    be an potion it investigate if using the USB port doesn't work.

    BTW, bit confusing the change of name!...
     
    :Jerry:, Jan 17, 2007
    #10
  11. Mike Gasson

    Tony Morgan Guest

    For the last three months I've been using a £45 portable external
    "slimline" 120GB HDD (USB2) for video work without problems. These are
    currently available in substantial numbers on Ebay. They use the Toshiba
    5400RPM 2.5" drive. I've had no problems whatsoever with all types of
    video work.

    Interestingly, drives have a novel (but simple) solution for those
    laptops/desktops that have problems providing sufficient power for the
    drive. The unit comes supplied with a special USB2 connector with one
    normal USB plug for the HDD, but the computer end has one full USB plug
    with a second USB plug with only the power supply connected. So if you
    have any problems with the power issue, you can simply plug the second
    plug into another USB port. I haven't had the need for the "power" USB
    connector.

    I've disposed with my desktop computer, now only using a Dell XPS M1710
    laptop.

    I've also gone completely wireless, with two 320GB central HDD running
    in a Netgear SC101 drive enclosure. These drives, though 7200RPM, cannot
    handle video directly because of the way they work on the network (they
    use a proprietary Netgear filesystem), but allow archiving data from my
    laptop's 5400 80GB and the external USB 5400 120GB drive.

    All this is hooked up via a Netgear DG834G ADSL router. I've also got
    two printers (one inkjet and one laser) wirelessly connected via a
    Netgear WGPS606 Wireless Print Server.

    I'm really pleased with the way the whole thing works - for video work
    as well as all the other things I get up to :)

    And it gets better. I can now use my laptop's 17" display for viewing
    full-screen while shooting via the Bluetooth on my Sony DCR TRV80
    camcorder.
     
    Tony Morgan, Jan 17, 2007
    #11
  12. Mike Gasson

    G Hardy Guest

    I have a USB drive chassis that has a similar setup. It can be powered by a
    suitable AC adapter, but comes with an additional cable that will draw 5V
    from either another USB port or the keyboard/mouse port.

    To the OP: Any aspect of video work will be affected by drive speeds and the
    throughput of their interfaces. However, the only speed-critical issue is
    video capture, and most drives (even external ones) have the throughput to
    deal with even uncompressed video. Beyond that, it's down to the speeds
    you're willing to live with. You can process video with a USB 1.1 drive -
    whether you can do it and maintain any semblance of sanity is another
    matter...
     
    G Hardy, Jan 18, 2007
    #12
  13. Mike Gasson

    bertieboy Guest

    So a 7200 Lacie should keep up OK with the capture throughput.
    Sounds a god idea. I've already ordered the LaCie now though.
    I went down a similar route, Fujitsu-Siemens Amilo A1630 (desktop
    replacement), but it looks quite modest against your Dell!
    Very impressive, hoorah for new technology, I say!
     
    bertieboy, Jan 18, 2007
    #13
  14. Mike Gasson

    bertieboy Guest

    I'm currently able to capture quite happily with the onboard laptop 4200
    drive but I don't have enough space left for serious editing, hence the
    LaCie. I well remember USB 1.1, it didn't do my hair styling much good!
     
    bertieboy, Jan 18, 2007
    #14
  15. Mike Gasson

    G Hardy Guest

    I was doing that as a matter of routine: Defrag, capture to C:, move video
    to USB drive, capture to C: etc. I just assumed that capture straight to USB
    would be fraught with problems so I never bothered. I had a bit of spare
    time, so I happened to try the USB capture and it worked fine, after all.
     
    G Hardy, Jan 18, 2007
    #15
  16. Mike Gasson

    bertieboy Guest

    Certainly USB 2 gives a whole new dimension to computers these days,
    lots of kit around now.
     
    bertieboy, Jan 18, 2007
    #16

  17. It isn't really about drive performance, or about theoretical port
    speeds. It's about how a particular computer deals with simultaneous
    input/output and how it allocates resources for USB, Firewire etc.
    Suck it and see. Maybe you'll fly. Maybe you'll have to capture to
    internal. You can then transfer to external for editing if you want.
     
    Laurence Payne, Jan 19, 2007
    #17
  18. Mike Gasson

    bertieboy Guest

    Understood, thanks. I'm just about to capture after I've formatted the
    LaCie.
     
    bertieboy, Jan 19, 2007
    #18
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