Antsle's file system is based on ZFS which include powerful features to speed up your servers. It creates a very fast cache located in the server’s memory (RAM), called an ARC cache. The size of the ARC cache can range from 30% - 90% all of unused RAM. It is released back to your antlets as soon as it's needed for other applications.
ZFS prioritizes the content that is both used most frequently and common across your virtual machines (for example, if you have many antlets based on a single template). This speeds up as many of your antlets as possible.