![]() NOTE: As with everything in technology, always test your system before you start editing to make sure it is fast enough to support what you want to do. I would expect the 4-drive RAID configuration to support 15 streams of 4K and 30 streams of proxy video. Based on some unofficial tests that I did, a 3-drive SSD RAID connected via Thunderbolt 3/4 easily supports 10 streams of 4K video, and about 20 streams of proxy video. Where 3- and 4-drive RAIDs make a big difference is in multicam editing. How often are you editing 12K 60 fps today? As you can see, all current video formats are easily supported. While it is helpful to see these speed numbers, the bigger question remains: Are these speeds fast enough? This chart ( above) from Blackmagic Disk Speed Test displays the results of editing media on a 2-drive SSD RAID. A single blade on the Thunderblade should max out around 975 MB/second. However, I don’t have a stand-alone unit to test. NOTE: A stand-alone NVMe SSD should be closer to 2,500 MB/second. No current video editing software will render or export media at anywhere close to these write speeds. Read speeds are more important than write speeds for media editing. A 3- or 4-drive SSD RAID should totally fill that pipe but, currently, they don’t. The maximum speed of Thunderbolt 3/4 is 2,800 MB/s.A 4-drive RAID 0 is roughly 2,200 MB/s, reads are slower than writes.A 3-drive RAID 0 is roughly 1,800 MB/s, writes are slower than reads.A 2-drive RAID 0 is roughly 1,200 MB/s, writes are slower than reads.(A stand-alone NVMe SSD should be MUCH faster than this.) A single blade formatted as an NVMe SSD is about 700 MB/second, writes are slower than reads.A 4-drive RAID 0 is slightly less than 6 times faster.Ĭonverting these same numbers into MB/second (MB/s):.A 2-drive RAID 0 is roughly 3 times faster.A single blade of the Thunderblade formatted as an NVMe SSD is slightly less than twice as fast.If we set the speed of a PCIe SSD equal to 100%: Each test was run five times, then the results were averaged.All tests were measured using AJA System Test (Full version) because the engineers at OWC told me that they trust the results of this software.All RAIDs were created using Disk Utility because past tests show that this software creates the fastest RAIDs.All RAIDs were formatted into APFS, which is the recommended format for SSD drives.Using Disk Utility, I combined the internal drives of the Thunderblade into three different RAID 0 configurations: 2-drive, 3-drive and 4-drive. My hope is that Apple fixes this in future updates.) (Here’s the article: Warning: SSD and ExFAT Speeds are Much Slower in macOS Ventura & Reformatting is Trickier. Expect your results to be lower than mine. NOTE: Recent testing shows that macOS Ventura is 15-25% slower reading and writing SSD drives. I then compared it to various configurations of an OWC Thunderblade NVMe SSD RAID. Using a 16″ MacBook Pro (with an M1 Pro chip) running macOS Monterey, I formatted a 1 TB Samsung T-5 PCIe SSD using APFS in macOS Monterey. In this article, I’ll show you real-world speed results and compare them to what we need for single and multi-camera editing. NOTE: All my test results and charts are available in a PDF at the end of this article. However, because this unit contains four separate SSD drives (called “blades”) this also gave me the ability to test the speed differences between different RAID configurations. NOTE: Read my review of the Thunderblade here. This 4-blade, NVMe SSD RAID is really fast – though not as fast as it could be. Recently, I bought an 8 TB OWC Thunderblade for myself to speed my editing.
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