Composable Infrastructure direct-connects compute and storage resources dynamically, using virtualized networking techniques controlled by software. Instead of physically constructing a server with specific internal devices (typically storage or NICs), or cabling the appropriate device chassis to a server, composable enables the virtual connection of these resources at the device level as needed, when needed.
Not bound by a fixed ratio of CPUs to storage or networking, etc., these products can assemble or “compose” bare-metal compute systems with the desired hardware configuration, essentially at run time. And, they can “disassemble” it when no longer needed, returning those resources to a common pool. Some solutions also support GPUs and/or FPGAs.
Intel’s Rack Scale Design (RSD) defines a reference architecture comprised of rack-based servers, storage, accelerators (FPGAs, GPUs), networking modules and Top-of-Rack switches that are built around an open-source software framework and controlled by DMTF Redfish APIs through a Web UI. Intel doesn’t market an RSD product, per se, but instead provides the software and reference architecture to server and infrastructure OEMs which create their own composable products and write their own version of composing software. Some of these OEMs’ products include:
Like other composable infrastructure solutions, RSD systems disaggregate physical resources into logical pools in order to create compute systems or “nodes”, using composing software. These systems are comprised of PODs, a physical collection of compute and storage chassis mounted in one or more racks.
Product Brief Includes: