HAMMER uses a basic 16K filesystem buffer for all I/O. Buffers are collected into clusters, cluster are collected into volumes, and a single HAMMER filesystem may span multiple volumes.

• HAMMER对所有的I/O使用了一个基础的16K文件系统缓冲器。缓冲器被收集成簇，簇被收集成卷，而一个单一的HAMMER文件系统可以跨多个卷。