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Raid speeds and HD,2K,4K speed requirements
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
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CJ Adams
Simplexity Digital Post
https://simplexitydigital.com -
11 Replies
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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
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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? -
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.
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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
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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.
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OH yeah.. my bad.. 300 + MB / s
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4KDPX need storage speed to 1.2GB/s
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How on earth would you achieve that?
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SSDs, Multiple Fibrecards…But can the bus hold that speed is the question
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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 RAID5hum..
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