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Activity Forums DaVinci Resolve Raid speeds and HD,2K,4K speed requirements

  • Raid speeds and HD,2K,4K speed requirements

    Posted by Christopher Adams on November 8, 2010 at 5:50 pm

    Have a question other then things like a red rocket card and using a nvidia 4000 instead of the 28x card.
    How fast throughput should you get for the raid to handle the different res files?

    Ie. for HD you need this much Mb/s
    for 2k you need this fast 4k etc.
    Right now i’m getting about a bit over 300 to 315 Mb/s read and write on this sata raid.
    This is my 2TB working raid. Can i expect to get decent performance in HD and 2k.. and light red work?
    CJ Adams
    __________________
    CJ Adams
    Simplexity Digital Post
    https://simplexitydigital.com

    Guilherme Ramalho replied 15 years, 5 months ago 8 Members · 11 Replies
  • 11 Replies
  • Uli Plank

    November 8, 2010 at 7:13 pm

    Native R3D files and ProRes are not that heavy. You need a very fast RAID only if you want to work with DPX sequences.

    Director of the Institute of Media Research (IMF) at Braunschweig University of Arts

  • Christopher Adams

    November 8, 2010 at 7:36 pm

    What kinda speeds do you need for working with say an HD or 2k or even 4k DPX do you think on average?
    Is like 312Mb/s R/W ok? Or are we talking like 500Mb/s and up speeds?

  • Kevin Cannon

    November 8, 2010 at 8:51 pm

    This PDF has the data rates that Caldigit uses for it’s products. The third column I think is what you’re looking for.

    It doesn’t have R3D, but disk read/write speed isn’t usually the problem there, and it doesn’t have 4K.

    Both AJA and Blackmagic have free software data rate calculators also.

  • Uli Plank

    November 8, 2010 at 9:38 pm

    Working in uncompressed 4K means massive datarates and very expensive – that’s why it’s not popular yet, not even in Hollywood…

    Director of the Institute of Media Research (IMF) at Braunschweig University of Arts

  • Paul Jay

    November 9, 2010 at 3:44 pm

    When you test a harddrive system with the Decklink or AJA system test. it give you MB/s

    When you do a Read/Write test with a Decklink or AJA system test it’s gives you MegaBytes/s

    A 100 Mb/s video codec will need 12.5 MB/s datarate for one stream.

    When you say my SATA raid does 300 Mb/s, you probably mean 300 MB/s.

  • Christopher Adams

    November 9, 2010 at 4:26 pm

    OH yeah.. my bad.. 300 + MB / s

  • Michael Stoer

    November 10, 2010 at 1:23 am

    4KDPX need storage speed to 1.2GB/s

  • Ola Haldor voll

    November 10, 2010 at 10:02 am

    How on earth would you achieve that?

  • Sascha Haber

    November 10, 2010 at 10:36 am

    SSDs, Multiple Fibrecards…But can the bus hold that speed is the question

  • Ola Haldor voll

    November 10, 2010 at 10:56 am

    Hmm.. So fiber is the way? Not possible with miniSAS? I’m a small cat in this profession, so I can’t spend money on such things. I wonder how far either of these would get me:

    – 16 disks via eSATA in RAID5
    – 8 disks via miniSAS in RAID5

    hum..

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