I’m capturing it DV NTSC, i did a test for 720×486 8bit and the result for write is 267 MB/s, read 239 MB/s. I right clicked and got the Raid format as Mac OS Extended (Journaled).
This will be hardware…I’m sorry I didn’t mention that. The SDI feed is from our playout system and I need to convert that signal to MPEG2, and I’m in the process of finding the best way for it to deliver. Thanks for your respond