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Multipath Resource Access

Multipath Resource Access (Erl, Naserpour)

How can an IT resource be accessed when its pre-defined path is lost or becomes unavailable?

Problem

When the path to an IT resource is lost or becomes unavailable, the IT resource becomes inaccessible. This can jeopardize the stability of an entire cloud-based solution until the cloud provider is able to supply the cloud consumer with the lost or updated path.

Solution

Alternative paths to IT resources are provided to give cloud consumers a means of programmatically or manually overcoming path failures.

Application

A multipathing system that resides on the server or hypervisor is established to provide multiple alternative paths to the same, unique IT resource, while ensuring that the IT resource is viewed identically via each alternative path.
Multipath Resource Access: An example of a multipathing system.

An example of a multipathing system.

NIST Reference Architecture Mapping

This pattern relates to the highlighted parts of the NIST reference architecture, as follows:

Multipath Resource Access: NIST Reference Architecture Mapping