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OceanStor 2200 V3 and 2600 V3 Storage System V300R005 SmartVirtualization Feature Guide 07

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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).
Installation and Deployment

Installation and Deployment

Before using SmartVirtualization to centrally manage storage resources, connect the local storage system to the remote storage system.

Precautions

Suspend services running on application servers before connecting the local storage system to the remote storage system. To prevent system services from being affected, install and deploy storage systems when no services are running.

If UltraPath is used and the version is earlier than V100R008C20, some functions of the storage systems taken over will be unavailable because the UltraPath version is too early. Therefore, you are advised to upgrade UltraPath when services are suspended during installation and deployment so that services will not be interrupted for several times. For details about how to check the UltraPath version, see Check the version of the multipathing software installed on the application server.
NOTE:

To upgrade UltraPath whose version is earlier than V100R008C20, suspend services on the application server.

Network Planning

The network between a local storage system and a heterogeneous storage system can be a standard direct-connection network or a standard switch-connection network. Select an appropriate network based on onsite requirements. Table 2-1 lists the possible networking diagrams between a local storage system and a heterogeneous storage system.
Table 2-1  Networking diagrams between a local storage system and a heterogeneous storage system

Network Type

Local Storage System Type

Networking Principle

Networking Diagram

Standard direct-connection network

Dual-controller device

A crossed networking mode is adopted to ensure link redundancy, that is, each controller in the local storage system is connected to that in the heterogeneous storage system through one link.



Multi-controller device

The host ports of the local storage system that are used to connect to the heterogeneous storage system reside on the same engine.



Standard switch-connection network

Dual-controller device

  • A crossed networking mode is adopted to ensure link redundancy, that is, each controller in the local storage system is connected to that in the heterogeneous storage system through two links.
  • If Fibre Channel switches are deployed on the network, ensure that the local storage system's host ports used to connect to the heterogeneous storage system and the host ports used to connect to application servers reside in different zones.



Multi-controller device (local storage system)
NOTE:

Not applicable to OceanStor 2200 V3.

The host ports used to connect to switches reside on the same engine of the local storage system.



Multi-controller device (local storage system and heterogeneous storage system)
NOTE:

Not applicable to OceanStor 2200 V3.

All controllers of an engine on the local storage system are connected to each controller of the heterogeneous storage system.



NOTE:
  • If the local storage system is connected to multiple heterogeneous storage systems, you are advised to connect the heterogeneous storage systems to different engines of the local storage system.
  • The total specification for paths of the external LUNs is limited (Total specification = Maximum path number supported by each external LUN x Number of external LUNs supported by a storage system). If an external LUN connects to more paths than the maximum number of paths supported by each external LUN, the access of other external LUNs will be affected.
  • When a standard switch-connection network is adopted, use different ports on the local storage system to connect the third-party storage system and application server.

Cable Connection

If SmartVirtualization is used to centrally manage storage resources, connect cables between a local storage system and a heterogeneous storage system as follows:
  1. Use optical fibers or network cables to connect the service ports of the local storage system to those of the heterogeneous storage system.
    Figure 2-2 shows the cable connections.
    Figure 2-2  Connections between a local storage system and a heterogeneous storage system

    NOTE:

    During cable connection, reads and writes of service data in the heterogeneous storage system are not interrupted.

  2. Stop services running on application servers.
  3. Disconnect the application servers from the heterogeneous storage system.
  4. Use optical fibers or network cables to connect the host ports of the application servers to the service ports of the local storage system.
    Figure 2-3 shows the cable connections.
    Figure 2-3  Connections between the local storage system and an application server

Follow-up Procedure

  • Optional: Upgrade UltraPath. For details about how to do so, see the upgrade guide of the corresponding version.
  • If optical fibers are used to connect a local storage device to a remote storage device, the local storage device automatically identifies the remote links. After the remote storage device is disconnected from the local storage device, the remote links disappear.
    NOTE:

    After mapping external LUNs to the local storage system as instructed in chapter Configuring a Heterogeneous Storage System, implement full automatic scanning for LUNs. Then, the remote device that corresponds to the heterogeneous storage system can be discovered in OceanStor DeviceManager of the local storage system.

  • If network cables are used to connect the local storage device to the remote storage device, perform the operations in Adding a Remote Device so that the local storage device can identify the remote links.
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Updated: 2018-12-29

Document ID: EDOC1000106155

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