![]() So that is the drive that gets hit all the time as you work. Once you apply edits to footage (or if it’s automatically conformed by Premiere Pro), the original file is not what you want played back but the version you applied edits to, and that temporary rendering of edits in the media cache. But media cache files are always and constantly read/written for previewing on demand. In contrast, a project file is small and not constantly written/read to, and original footage gets read in once and then (I think typically) cached. Remember what I mentioned earlier that media cache files are especially speed sensitive they should be on the NVMe. I second that…swap what you’ll put on the SATA and NVMe drives. But if you do see lags like dropped frames it would be worth trying to split them across drives, with the media cache files on the faster SSD. ![]() If your D drive is a large fast NVMe SSD and you have no complaints so far, I think it’s OK to put everything on it. So that’s the spectrum: Hard drives or SATA SSDs require splitting video projects and cache files across drives, but NVMe SSDs (especially high capacity) might not, depending on the typical complexity of your projects which is another variable. Larger SSDs tend to be faster because the controller has more lanes to the storage chips, resulting in parallel data flows, which is the benefit we get from multiple volumes. With NVMe SSDs, which can be 1000–3000+MB/sec over a connection that can handle that, it should be less necessary because it’s more likely they can handle multiple large data streams simultaneously. ![]() With SATA SSDs, limited to 500MB/sec or so, splitting files across multiple drives should still make a noticeable difference. SSDs make that less necessary but again, it depends on how fast they are. Having data move over separate parallel streams helped a lot. The advice to store various components (system, project file, footage, cache files…) on different volumes was absolutely critical with hard drives because they were so slow. My opinion (because it’s possible that someone needs to correct me) is that the faster and larger the storage, the less it matters.
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