Editing From External 2.5" Vs. 3.5" HDD

Discussion in 'Digital Video' started by foo1osophy, Feb 28, 2011.

  1. foo1osophy macrumors newbie

    Joined:
    Jun 8, 2009
    #1
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    A 2.5" S-ATA HDD with 7200RPM will be as fast as a 3.5" S-ATA HDD.
    What exactly do you want to edit with what application?
    DV footage has a data rate of 3.5MB/s approx., HD footage using the Apple Intermediate Codec (AIC - iMovie, Final Cut Express and Pro) has a maximum data rate of 14MB/s, HD footage using ProRes 422 (FCP) double of that.
     
  3. martinX macrumors 6502a

    martinX

    Joined:
    Aug 11, 2009
    Location:
    Australia
    #3
    You want speed, get a 7200 rpm drive and connect it via Firewire 800 or eSATA. On the G-Drive site, they have 3.5" and 2.5" externals. In the 7200 rpm variants, both give around the same transfer rate using FW800. eSata (only on the 3.5" model) is considerably faster, but if you don't have eSATA you won't care.

    Given their equivalence, can the 2.5", 7200 rpm version be bus-powered?

    I've just written to the G-Technology people about their 7200 rpm 2.5" external hard drives.

    All of the bus powered drives I have seen until now have been:
    • 2.5"
    • 5400 rpm
    • USB

    I can't see why firewire can't power a 7200 rpm drive, but maybe no-one's bothered building that in. Not many PCs have 6-pin FW ports, let alone 9-pin FW800.

    The manual is silent on the question. We await.
     
  4. martinX macrumors 6502a

    martinX

    Joined:
    Aug 11, 2009
    Location:
    Australia
    #4
    UPDATE:
    Dear Martin,

    The G-DRIVE mini can be bus-powered with the Firewire or USB connection.
    Please let me know if you have any further questions.

    Best,
    Tawny Mitchell
    ************
    Tawny Mitchell
    Inside Sales
    G-Technology by Hitachi
    Direct Phone (310) 287-5209
    Fax (310) 449-4670
    -------------------------------------------------------------------

    Although you'd get more GB/$ from a 3.5" drive, if fast and bus-powered are of overriding importance, this one looks good. Investigate further.
     
  5. Consultant macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
    #5
    Not the same speed.

    Larger drives at same RPM = faster speed
    3.5" drives faster than 2.5" drives
    Drive near full = slower than empty drives
    However there are SSD drives
     
  6. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #6
    My bad, as my experience has been that a 2.5" S-ATA HDD with 7200RPM is as fast as a 3.5" S-ATA HDD with 7200RPM, 105 to 110 MB/s. Therefore my conclusion. Though I haven't had a 5400RPM 3.5" S-ATA HDD to compare to a 2.5" S-ATA HDD with 5400RPM.
     
  7. martinX macrumors 6502a

    martinX

    Joined:
    Aug 11, 2009
    Location:
    Australia
    #7
    There doesn't seem to be a whole lot of difference on a FW800 link.

    3.5" 7200 rpm FW800
    [​IMG]

    2.5" 7200 rpm FW800
    [​IMG]

    Downside of the 2.5" is that you can get capacities up to 500 GB comapred to 3 TB for the 3.5".
     
  8. puckhead193 macrumors G3

    puckhead193

    Joined:
    May 25, 2004
    Location:
    NY
    #8
    I have the G tech mini 500GB 7200RPM and have no issues with it. Great when I don't want to lug around my g-raid drives :p
    My camera (Sony NX5U) is AVCHD so I have to convert to pro-res for FCP and have no issues with speed when editing. Only thing I wish was larger in GB/TB :p
     

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