Network Planning

Deployment Modes

UltraVR can be deployed in centralized or distributed mode. The following describes the two deployment modes:

• Centralized deployment:

  The Server is deployed on an independent server at the DR site to provide DR management for production and DR resources. The Server must be able to communicate properly with the production site network.

• Distributed deployment: The UltraVR Server is deployed on the servers at the production site and DR site to provide DR management for site resources. UltraVR Server deployed at the production site must communicate properly with UltraVR Server deployed at the DR site.
  Figure 1 and Figure 2 show the typical networks in distributed mode.

  Figure 1 Typical network diagram for distributed deployment (VM)
  
  Figure 2 Typical network diagram for distributed deployment (FusionSphere VM host-based replication)
  

  Table 1 describes details about the previous network diagrams.

  Table 1 Network information

  Item	Description
  Production storage	All the storage devices connected to the production site.
  DR storage	All the storage devices connected to the DR site.
  CNA	Computing Node Agents (CNAs) are deployed on physical servers and manage local VMs and corresponding virtual volumes.
  Management network	The management network includes DR management network and production management network. The two networks may reside on a same network or be separated. DR management network: communication network used by UltraVR to provide external services. The maintenance terminal and third-party systems access this network using the management IP address of the DR server. Production management network: communication network used by UltraVR storage devices, FusionManager, FusionCompute and VRGs to provide external services. The maintenance terminal and third-party systems access this network using their management IP addresses.
  Service network	Communication network that transfers the read and write I/Os between hosts (or VMs) and storage resources.
  Replication network	Communication network used by the production site to replicate service data to the DR site. This network includes the host-based replication network and storage-based replication network.

Deployment Principles

• Up to two UltraVR Servers can be deployed. If only one UltraVR Server is available, deploy it at the DR site whose services need to be recovered preferentially. If two UltraVR Servers are available, deploy one at the two DR sites respectively. Ensure that the management network between the managed sites and the UltraVR Servers is normal.
• In the geo-redundant DR scenario, three sites, including production site A, DR site B, and DR site C, must be configured. In this scenario, only the following two deployment modes are supported.
  • If two UltraVR Servers are deployed, the UltraVR Server deployed at site B manages sites A and B, and that deployed at site C manages site C.
  • If only one UltraVR Server is available, you are advised to deploy it at the DR site whose services need to be recovered preferentially. The UltraVR Server manages sites A, B, and C at the same time.