Dell PowerStore 1200T EMC PowerStore Protecting Your Data - Page 20

4 Replication This chapter contains the following information: Topics: • Remote systems • Synchronization • Failover • Virtual volumes replication Remote systems Both remote replication and metro protection require a remote system connection between two PowerStore systems. In PowerStore, the remote system connection is associated with the replication rule. You can create a remote system connection before configuring remote replication. If you are using PowerStore manager, you can create a remote system connection while creating a replication rule. It is also possible to create a remote system when configuring metro on a volume. It is possible to create a remote connection between systems running different versions (1.x, 2.x, 3.x). The systems versions determine the supported capabilities. It is required that both systems run a PowerStore version for a capability that is included in this version to be supported. The following conditions should be met for replication of storage objects: ● Volume replication ○ The paired systems must run version 1.x or later. ● File replication ○ The paired systems must run version 3.x or later. ○ Connection type - TCP ● Virtual volumes replication ○ The paired systems must run version 3.x or later. ○ Connection type - TCP ● Metro ○ The paired systems must run version 3.x or later. ○ Connection type - TCP (see Metro pre-requisites and limitations) ○ Network latency - Low The Remote Systems table (under Protection) displays the configured remote system connections. In the Remote Systems table you can: ● View remote systems information - You can see the name and IP of the remote system, supported capabilities (visible only if supported by both systems), and data connection status. The detailed view provides IP connectivity status for all initiators. ● Click a remote system to modify its attributes. You can change the description and network latency of a remote system connection. ● Select a remote system and click Delete to remove it. You cannot delete a remote system in the following instances: ○ When there are active replication sessions. ○ When there is a replication rule that is associated with the remote system. ○ When there are Metro volumes ● Select a remote system and click More Actions > Verify and Update to verify and update the connection to the remote system. Verify and update detects changes in the local and remote systems and reestablishes data connections, while also taking the Challenge Handshake Authentication Protocol (CHAP) settings into account. ● Monitor the management and data connection status for troubleshooting purposes. 20 Replication