Crucial mx500 sata 4TB . Product#is in that last lsi bios screenshot. Crucial ssd firmware is M3CR044 (latest version i believe), seen as 044 in that screenshotIt really might help if you'd provide details on the SSD(s) being used
TRIM? I don't think it's absence is causing my problems currently, but it might be. I don't think I've collected garbage on the SSD to affect performance like this and SSD does perform well at above 300-400MBps writes sometimes. Reads are even faster at above 500MBps and never a problem. Seems just the writes suffer sometimes and fall below 40 MBps and seem to stay there until I reboot the VM, which leads me to believe it's a problem with how I configured the VM.what about trim on these SSDs? as far as i know(well, have not used ESXi for a while) ESXi wont support trim as you see it in Linux, or are this changed on latest versions?