Open Cache Acceleration Software

Open CAS is an open source project encompassing block caching software libraries, adapters and tools. It accelerates backend block devices by caching their hot data on higher performance devices.

At its core is the Open CAS Framework (OCF), a block storage caching meta-library written in C. Two adapters build complete caching solutions on top of it: Open CAS Linux for the Linux kernel, and the SPDK block device for userspace SPDK applications.

Start with the Introduction for how the pieces fit together, or go straight to the part you need:

• Concepts — what caches, cores, volumes and cache modes are
• Open CAS Linux — install, configure and run a cache on Linux
• Open CAS Framework — integrate OCF into your own application
• SPDK — the SPDK OCF block device adapter