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3-Tier Platform Design Guide
Introduction Solution Design and Key Components Cisco UCS Managed Compute Layer Cisco Intersight Managed Compute Layer Network Layer Storage Layer Data Protection and Replication
Overview
Business continuity
Disaster recovery
RecoverPoint for Virtual Machines Cloud Solution
Design recommendations for business continuity and disaster recovery
Data protection backup systems
3-Tier Platform backup systems connectivity overview
Management and Virtualization Solution Configuration and Specifications References

Business continuity

Home > Integrated Products > VxBlock 1000 and 3-Tier Platform Reference Architectures > Guides > 3-Tier Platform Design Guide > Business continuity

Business continuity

  • Dell Integrated Data Protection provides business continuity services through VPLEX and related technologies.

    VPLEX

    VPLEX delivers enhanced availability, characterized by zero loss of data and near-zero application downtime. VPLEX also delivers enhanced mobility, which is the migration of applications and data between systems without the overhead of work, planning, and downtime that is associated with traditional migrations.

    A VPLEX cluster resides in the data path between the converged system servers and storage, where it can create data copies. Copies are created locally or over distance and read and write access is available.

    VPLEX enables dynamic workload mobility and continuous availability within and between converged systems over distance. VPLEX also provides simultaneous access to storage devices at two sites through the creation of VPLEX distributed virtual volumes (vVols), which are supported on each side by a VPLEX cluster.

    The VPLEX integrated data protection cluster for converged systems uses the following components and technologies:

    • One or more converged systems
    • VPLEX
    • VMware vCenter Server
    • VMware vSphere High Availability (HA)
    • VMware vSphere vMotion

    Dell supports the following VPLEX systems for integrated data protection solutions:

    • VPLEX Local: A VPLEX cluster that provides the ability to manage and mirror data between multiple converged systems from a single interface in a single data center.
    • VPLEX Metro: Two VPLEX clusters that are connected over distance by intercluster links. VPLEX Metro enables concurrent read and write access to data by multiple hosts across two locations. By mirroring data between two sites, VPLEX Metro provides nonstop data access if there is a component failure or a site failure.
    • The Cluster Witness is an optional component for Metro implementations of VPLEX Metro and Dell metro node. The Cluster Witness is deployable at a third site to improve data availability if cluster failures and intercluster communication loss occur. The Cluster Witness is deployed as a VM for VPLEX VS6. Its VMware ESXi host must reside in a separate failure domain from both VPLEX clusters to eliminate the possibility of a single fault affecting both a VPLEX cluster and the Cluster Witness. A customer-supplied VM or physical server running SLES 15 SP3 is required to run the Cluster Witness with metro node.

    The Cluster Witness observes the state of the clusters and can distinguish between an outage of the intercluster link and a cluster failure. The Cluster Witness uses this information together with the preconfigured detach-rules to guide the clusters to resume or suspend I/O.