Posted 10 February 2015 - 12:22 AM
I shot a 14 day feature in 2013 with 5D3 ML raw. Things may have changed a bit since then, but I was able to use my 2012 15" Retina MacBook Pro to do overnight transcodes, first to Adobe Cinema DNG with RawMagic and then to Prores via Resolve. All off of USB3 bus powered 2TB drives, so it's all doable with fairly low budget gear. Ideally you would have a tower with more a more powerful CPU and multiple GPUs for faster processing, and a large fast RAID for storage and redundancy.
No idea about 10 or 12 bit recording.
One challenge is that recoding raw creates a lot of data. If I remember correctly, 4GB/min at 1920x1038 (1.85:1) 23.98fps (max continuous recording time on my KomputerBay cards). I started with 4x 64GB cards (16min each) and ended up with 8 cards by the end. Also, dropped or corrupted frames happen occasionally and are not always reported by the camera. There's no way to check until you transcode the footage, so you should always shoot a safety take after a circle take, just in case. Finally, no usable playback in camera. So you pretty much have to treat it like shooting film and wait for dailies to catch any problems. Always carry an extra camera body, just in case. Of course, ML is not supported by Canon and voids warantees so if that matters to you then don't use it.