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OceanStor 9000 V300R006C00 File System Feature Guide 12

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Requirement Analysis

Requirement Analysis

This section analyzes the multi-subnet storage requirements of a data center and provides a storage solution.


A large enterprise uses a data center in the computing cloud mirror storage scenario where computing clouds and data transmission systems use different aggregation switches to access the storage network. Therefore, service ports of the storage system must be capable of supporting different IP segments. Storage nodes accessed by different computing clouds can be isolated by subnets. Figure 2-19 shows a typical network diagram.

Figure 2-19  Typical network diagram
Table 2-16  Data center network planning
Item Status Quo Remarks

Front-end service network

  • Computing cloud:
  • Data transmission system:

The computing cloud and data transmission system reside on different subnets. No DNS server is configured.

Shared directory

  • share_a: used to store service data of the computing cloud. Service systems of the computing cloud can read and write data under this directory.
  • share_b: used to store service data of the data transmission system. Service systems of the data transmission system can read and write data under this directory.

No quota is configured for the shared directories.

Service model

  • Computing cloud: provides hybrid services that access large and small files, including read and write services.
  • Data transmission system: access large files, in most cases, data is written once and read multiple times.


The computing cloud and data transmission system have different storage requirements. A storage system that meets requirements of both systems must be provided to reduce IT investment and simplify deployment, management, and maintenance. Moreover, the storage system must be able to optimize services for the two systems with different client quantity and service types.

Analysis and Conclusion

Based on the requirement analysis, it is concluded that data center needs a storage system that can support services on both the computing cloud and data transmission system. The solution is as follows:
  • Configure an OceanStor 9000 with four nodes for the two service systems.
  • Use InfoEqualizer to configure two subnets.
  • Clients of the computing cloud and data transmission system can use the DNS server IP addresses of OceanStor 9000 subnets resolved from domain names of corresponding zones to access the storage system, without the need of a DNS server.
  • Configure the comprehensive node load policy for zones on the computing cloud subnet and the node throughput policy for zones on the data transmission system subnet.
  • Configure a shared directory for each zone respectively with no quota specified. Nodes can be added to expand storage capacity to adapt to the ever-increasing file volume. New nodes can also be added to the two zones to expand the client access capability of each zone based on service loads.
Updated: 2019-06-27

Document ID: EDOC1000122519

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