Composable
Infrastructure
Posted by: Margaret
Rouse
A composable infrastructure is an infrastructure whose physical compute,
storage and network fabric resources are treated as
services. Infrastructure resources are logically pooled so that administrators don't have to
physically configure hardware to support a specific software application.
Instead, the software’s developer defines the application’s requirements for physical
infrastructure using policies and service profiles and then the software calls
those services it requires with application programming interfaces (APIs) and creates (composes) the
infrastructure it needs to run on bare metal, as a virtual machine (VM) or as a container.
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A composable infrastructure negates the need for IT
administrators to be concerned with the physical location of physical
infrastructure components. Instead, a framework defines what the individual
objects "of composure" are -- and each object exposes
information about itself through a management API. Then, when a software
application requests infrastructure to run, available services are located
through an automated discovery process and resources are allocated on demand. When an infrastructure resource
is no longer required, it is re-appropriated so it can be allocated to another
application that needs it.
The goal of a composable infrastructure is to allow an
enterprise data center to use its own physical
infrastructure in a more cost-effective manner by reducing waste and the amount
of time it takes to deploy a new application. Several vendors, including HP
Enterprise and Cisco are promoting the concept as a way for internal IT
departments to provision workloads just as quickly and efficiently
as public cloud service providers can, while still
maintaining control over the infrastructure that supports mission-critical
applications in a private cloud setting. The concept of
pooling physical infrastructure resources and building infrastructure logically
is supported by the growing popularity of software-defined networking (SDN), object storage, converged infrastructure and DevOps.
As of this writing, there are no agreed-upon standards
for deploying a composable infrastructure and different vendors and proponents
are describing composable infrastructure by different names -- including
programmable infrastructure, intelligent infrastructure, software-defined infrastructure,
Infrastructure as Code (IaC), decoupled infrastructure and hardware
disaggregation.
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