Some issues of disaggregation and composability of the data center infrastructure

The composable disaggregated infrastructure (CDI) promises to become the next step in improving organization and functioning principles of data centers. The essence of CDI is in transition to a “fine-grained” infrastructure and automatic layout of local executive infrastructures that should be optimal for each specific workload. With obvious advantages in flexibility of using data center hardware resources, the CDI has, nevertheless, some limitations in feasibility and applicability. Although there are offerings of data center infrastructures announced as disaggregated or composable, those appear in many cases nothing more than advertising tricks to attract users with fashionable terms. In reality, other infrastructural solutions are often proposed under the disguise of the CDI. This is largely provoked, in addition to purely marketing aspects, due to the vagueness of the CDI term. In particular, the concept of composability is applicable at various infrastructure “granularity” levels including not necessarily disaggregated ones. As a general rule, the CDI concept implementation is feasible only within a software-defined data center.