Would like to get some info on whether or not there are ESXi specific tweaks to get better performance out of VMs sitting on an SSD datastore.
Lab Setup:
LSI 9260-8i RAID card
8 x 500GB Samsung 830 SSDs (TLC, horrible I know), RAID5 (yes I must have parity protection)
I have endlessly tweaked the 9260 and RAID settings to arrive at the best possible configuration according to my benchmarks: No read ahead, 128KB stripe size, direct I/O, disk cache enabled, write back with BBU..
I am seeing a pretty big performance hit comparing native RAID performance in windows vs performance in ESXi when I transplant the same RAID card/SSDs into my lab ESXi host and test from inside a VM. Understood there is overhead from the hypervisor, and then overhead from the VM.. but still..
Looking for anyone who has experience with a similar setup and can provide tweaks/suggestions..
Thanks in advance!