I'm helping a friend to assess external storage options. We are hoping that a Lacie 2big will be fast enough to support a 4K final cut work flow. Can two spinning 7200RPM drives configured as RAID 0 even play back 4k ProRes raw?

I found an apple white paper which looks extremely informative -- can someone confirm that "Mbps" in this document refers to megaBITS per second? If so, we see these data rates for ProRes 4444 (no alpha):

24p     1697 mbps   212.125 MB/s
25p     1769 mbps   221.125 MB/s
30p     2121 mbps   265.125 MB/s
50p     3539 mbps   442.375 MB/s
60p     4242 mbps   530.25 MB/s

If I understand that white paper correctly, those data rates look pretty high for just two drives. Does anyone have any personal experience working with 4K ProRes RAW off a pair of spinning drives in RAID 0? Is this feasible? Or should we be looking at 4-drive or 5-drive units?

  • 1
    If you have the hardware already, and you're on a Mac, the [BlackMagic SpeedTest app][1] is a great way to see what video your system is capable of reading and writing. [1]: apps.apple.com/us/app/blackmagic-disk-speed-test/id425264550
    – tomh
    May 5, 2021 at 20:42
  • @tomh we do not yet have the hardware, and are wanting to avoid buying anything that doesn't do the job. thanks for the comment, though! that looks handy.
    – S. Imp
    May 5, 2021 at 21:05


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