Redundant Storage (Erl, Naserpour)
How can the reliability and availability of cloud storage devices survive failure conditions?
ProblemWhen cloud storage devices fail or become inaccessible, cloud consumers are unable to access data and cloud services relying on access to the device may also fail.
SolutionA failsafe system comprised of redundant cloud storage devices is established so that when the primary device fails, the redundant secondary device takes its place.
ApplicationData is replicated from the primary storage to the secondary storage device. A storage service gateway is used to redirect data access requests to the secondary storage device, when necessary.
Compound PatternsBurst In, Burst Out to Private Cloud, Burst Out to Public Cloud, Cloud Authentication and Access Management, Cloud Balancing, Elastic Environment, Infrastructure-as-a-Service (IaaS), Multitenant Environment, Platform-as-a-Service (PaaS), Private Cloud, Public Cloud, Resilient Environment, Secure Burst Out to Private Cloud/Public Cloud, Software-as-a-Service (SaaS)
A simple scenario demonstrating the failover of redundant storage.
NIST Reference Architecture Mapping
This pattern relates to the highlighted parts of the NIST reference architecture, as follows: