With enough RAM, we can install DCS directly into memory via a RAM disk. - disk - performance - RAM
Migrating from Amazon's EBS network storage to local SSDs has been working really well. However during a busy mission I still observed a spike in disk / drop in network and associated pause, but it was kind of expected as it was right as a whole bunch of units were getting loaded in.
A ramdisk is a configuration where ram is presented to the operating system as though it we're a disk. An installation of DCS is ~50GB, so an instance at 64GB+ should be able hold the install and have enough left over to run the game as well. I'm exited to see how this configuration turns out under load.