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OceanStor 2600 V3 Storage System V300R005 HyperMetro Feature Guide 06

"This document describes the implementation principles and application scenarios of theHyperMetro feature. Also, it explains how to configure and manage HyperMetro."
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Solution Overview

Solution Overview

HyperMetro is Huawei's active-active solution that enables two storage systems to process services simultaneously, establishing a mutual backup relationship. If one storage system malfunctions, the other one will automatically take over services without data loss or interruption.

Huawei's active-active solution supports both single-data center (DC) and cross-DC deployments.

  • Single-DC deployment

    In this deployment mode, the active-active storage systems are deployed in two equipment rooms in the same campus, which are generally within 10 km apart.

    Hosts are deployed in a cluster. Hosts communicate with storage devices using Fibre Channel switches or IP switches. Mirror-based dual-write channels are deployed to ensure the normal running of active-active services.

    Figure 1-1 shows the logical diagram.

    Figure 1-1 Single-DC deployment

  • Cross-DC deployment

    Generally, two DCs are deployed in the same city or two cities close to each other. The physical distance between the two DCs is within 300 km. Both DCs are running and can carry the same services together, improving the overall service capability and system resource utilization of the DCs. When one DC fails, its services are automatically switched to the other DC.

    In cross-DC scenarios, for long-distance transmission, dense wavelength division multiplexing (DWDM) devices must be used to ensure a short network transmission latency. In addition, mirroring channels must be deployed between the active-active storage systems for data synchronization.

    Figure 1-2 shows the logical diagram.

    Figure 1-2 Cross-DC deployment

    Solution highlights:
    • Dual-write ensures data redundancy on the storage systems. In the event of a storage system or production center failure, services are switched over to the other DC at zero RTO and RPO, ensuring business continuity without any data loss.
      NOTE:

      If the active-active solution is used by typical clusters, zero RTO can be achieved. For virtual clusters, the RTO is approximately equal to zero because VMs will be automatically restored on other hosts if a host in the cluster becomes faulty.

    • HyperMetro and SmartVirtualization are used together to support heterogeneous storage and consolidate resources on the network layer to protect the existing customer investment.

The active-active DC solution is well suitable to the health care, finance, and social insurance industries.

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Updated: 2018-09-03

Document ID: EDOC1000106183

Views: 29197

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