You should expect no more than 50% of the performance compared to the same RAID/# of drives of regular 10K SAS.
If that meets your requirements, great.
Any feedback is good feedback, thanks. But 50% of x is what?
I guess to ask my question another way, is there anyone running ESXi on SATA drives and are you "satisfied" with the performance? Again, I realize it is hard to compare apples to apples but I also don't know to what extent ESXi is deployed on SATA drives (local storage).