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  • How Many Drives Need

    Hi,
    I have an event coming up that I would like to capture via my HDBX 1000 box.
    In the past when I have used this box and captured from Sony EX-3 (mostly talent reels), I have only captured in clips of about 9 to 15 min. Now I would like to capture a 3 hour event but I don't know if my two drive raid 0 could handle that long of an event. My capture drives are two western digital 10,000 rpm each at 500 GB. I would like to capture in canopus HQ fine which I believe is somewhere around 300Mbps but no less the a 50 Mbps rate. I an looking for help to see if either a 2 or 4 drive raid 0 could perform that long of a capture.
    I also have the very same raid 0 setup for my system drive also, so if needed I could drop system raid 0 and then allow me to get a 4 500 GB 10,000 rpm raid 0 capture drive but then I would have to go to a one drive system drive.

    Thank You
    Jeff
    Canopus HDBX-1000H, Second RX-E1 HD card for HD SDI capture, Complete NX set, Edius 6.08, Media Composer 7.02, Premiere Pro CS 6 and CC, Encore CS 6. I7 990, X58 Supermicro, 24 GB DDR 3 1066 memory, System Drive WD 10,000 RPM 500 GB HD X 2 in Raid 0, Capture Drive WD 10,000 RPM 500 GB HD X 2 in Raid 0. Storage Drive WD Black 1.5 TB HD and a EVGA GTX 780 VC.

  • #2
    Just so you know, 300Mb/s equates to around 37.5MB/s which even the slowest single modern drive can keep up with, and 3 hours should fit easily onto 1 of those 500GB drives. Personally I stay away from stripe sets, as they are prone to failure, and you lose 1 drive you lose the lot

    Just so you know for future on how to work out the figures

    1MB/s = 8Mb/s
    1GB=1024MB
    so
    300Mb/s /8 = 37.5 MB/s
    1 minute = 37.5*60 = 2250MB
    1 hour = 2250*60 = 135000MB
    3 hours = 3*135000 = 405000MB

    which you then divide by 1024 to work out how much space on your drive you need
    405000/1024 = 395.51GB (rounded up)

    Hope this helps
    DVC Built Clevo P775DM3-G Laptop with UHD screen, 7700K [email protected], Geforce GTX 1060 6GB GPU, 500GB M.2 Primary, 1x 480GB SSD, 1x1TB M.2, 1x 2TB 5400RPM Video drives, external Blu-ray Optical

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    • #3
      Thanks

      Hi Adbear,
      Thank you for you breakdown, I currently capture very small clips to my raid 0 drive and have been for several years now and I always use canopus HQ Fine or close to that which is about 345 Mbps but again as I said in my 1st post they only range from several min to as much as 17-25 min and have never had a problem with my files yet (knock on wood), but I do replace my drives about once a year as they do see a lot of work (about 17 to 22 hours of recording a week). My concern is I have never pushed my system to record 3 + hours without a stop in the record and this event has one of my grandkids in it so I want to record at a good bit rate.
      I though Edius stressed the use of raid 0 for capturing HD video in their setup of equipment. That was the only reason I did not run a raid 1 instead.
      I do have the SXS cards as a backup but I am using my EX-3 which only gives 35Mbps max.
      I don't understand why it took so long for my post to show up in this forum, I checked every hour for five hours and did not see the post, had to leave so I could not replay until know.

      Jeff
      Canopus HDBX-1000H, Second RX-E1 HD card for HD SDI capture, Complete NX set, Edius 6.08, Media Composer 7.02, Premiere Pro CS 6 and CC, Encore CS 6. I7 990, X58 Supermicro, 24 GB DDR 3 1066 memory, System Drive WD 10,000 RPM 500 GB HD X 2 in Raid 0, Capture Drive WD 10,000 RPM 500 GB HD X 2 in Raid 0. Storage Drive WD Black 1.5 TB HD and a EVGA GTX 780 VC.

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