I am curious about the slow part. I use these crappy SATA cards and I am sure they are crappy, but the drives are only going to give 100MB/s in bursts and they have an LVM cache (or ZFS stuff) on them to sustain more short-term writes.
I get if I was wiring up NVME drives that are going to go 500MB/s and higher all the time.
What I really care about with the SATA and what I mean by flaky is I when I have to reboot a system physically every day because the controller stays on in some way even if it gets a soft `reboot` command and then Linux fills up with IO timeouts because the controller seems to stop working after X amount of time.
I get if I was wiring up NVME drives that are going to go 500MB/s and higher all the time.
What I really care about with the SATA and what I mean by flaky is I when I have to reboot a system physically every day because the controller stays on in some way even if it gets a soft `reboot` command and then Linux fills up with IO timeouts because the controller seems to stop working after X amount of time.