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Metro Volume connectivity requirements may vary depending on intended and actual use. For example, requirements for using Metro Volume to migrate a workload of powered off virtual machines is going to be significantly different than migrating virtual machines that are powered on and highly active.
A native PowerStore Metro Volume can be configured on all PowerStore models running PowerStoreOS 3.0 or later in a vSphere Metro Storage Cluster (vMSC) configuration. A vMSC can provide a vSphere stretched cluster architecture. For the host configuration, PowerStore supports non-uniform host access which uses only local paths, and Uniform host access which provides extra cross-connectivity to the remote PowerStore cluster. PowerStoreOS 4.0 or later supports Metro Volume for Windows Server and Linux hosts.
We recommend using dedicated VLANs or fabrics to isolate IP-based storage traffic from other types of general-purpose LAN traffic, especially when spanning data centers. While this recommendation is not a requirement for Metro Volume, it is a general best practice for IP-based storage.
Besides the existing requirements for PowerStore replication, the following restrictions and requirements apply for Metro Volume:
Note: The PowerStore TCP-based replication protocol uses TCP ports in the range of 13333-13337 depending on the network latency configuration of the remote system. Ensure firewall rules between PowerStore clusters with Metro Volumes allow these ports to pass traffic.