I've got a Thunderbolt 3 enclosure with SATA connectors, which allows both 3.5" and 2.5" drives. I just put a 2.5" enterprise-grade SSD in as a separate ZIL (SLOG), and it does help, but not as much as I'd like.
Since I believe this is because of the 6 Gbit/sec SATA bottleneck, I got to wondering if I could attach an NVMe drive via Thunderbolt 3 instead. I'm asking here because most of the offerings I'm finding seem rather cheesy, not capable of exposing the full speed of the drive within. For instance, this one is spec'd to go to about 11.2 Gbit/sec, nowhere near the 40 Gbit/sec of the interface. I can get drives with write speeds much higher than that limit, so it bugs me that I won't get full benefit of either the drive or the interface.
It also bothers me that I'm not finding any with daisy-chaining ability. While I do want to put this SLOG onto its own Thunderbolt port to maximize throughput in write-heavy operations, I'd like the option to chain other low-speed devices off it, to get some use out of the port while it's idle.
Has anyone tried this? Did you find it a worthwhile improvement?