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Data rate for 2k
Hello,
Does anyone know what is the data rate for 2k at 24p?
I need to know which kind of RAID system is able to handle that.Regards,
MartialVancouver Island Final Cut Pro User Group
Martial Bachoffner
Founder and Administrator -
6 Replies
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AJA has several excellent white papers on 2K production at their website.
https://aja.com/html/support_kona3_doc.html
According to this it’s 300MB/s +
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”“I reject your reality and substitute my own!” – Adam Savage, Mythbusters
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If you’re talking about “real” 2K, that would be 2048×1556, and approx. 12MB per frame. 12MB x 24 fps = 288MB per second. You do, of course, need to have a drive system that provides more than that to ensure proper playback. Twice that would be comfortable in a professional environment, but you could likely get away with something that provides, say, 400MB/sec in many cases.
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Nothing short of a 4gb fibre channel system…yes?
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[Borjis] “Nothing short of a 4gb fibre channel system…yes?”
or very fast SATA. I have the CalDigit HD unit which is running 233MB/s. If I stripe two of these units together I’ll be over 400MB/s. I can stripe four units across a single SATA card so there’s no reason I couldn’t do 2K with these units.
Walter Biscardi, Jr.
https://www.biscardicreative.com
HD Editorial & Animation for Food Network’s “Good Eats”
HD Editorial for “Assignment Earth”“I reject your reality and substitute my own!” – Adam Savage, Mythbusters
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I agree, it can be done with SATA. You should plan on at least 10 drives to get a 400MB/sec rate, however. And be aware that you will only get this kind of throughput with a Raid 0 array, at least if you use SATA. You’ll have to make sure the data is backed up on a regular basis and be prepared for disaster.
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[Mike Most] “. You should plan on at least 10 drives to get a 400MB/sec rate, however. And be aware that you will only get this kind of throughput with a Raid 0 array,”
Agreed,
10 drives is a minimum, my fibre array handles 2K 23.98 at 328MBs –I am using 2 -G-speed 6 drive arrays in a bonded RAID 0 config. This is the same config that Red uses for their 2K demos and I have had one running in test mode for 10 days without a hitch.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
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