The PowerMax SRDF/Metro feature enables an administrator to host applications in HA environments. When configured using SRDF/Metro, hosts, clusters, and applications can perform read/write operations on both source and target arrays. The feature functions like SRDF/S mode and maintains a real-time copy at arrays that are located within 200 KMs, depending on application workload, network latency, and block size.
To create SRDF/Metro pairs:
Note: SRDF/Metro offers customers two types of witness deployment models: a physical array witness and a software witness. We configured this validated SRDF/Metro environment using the physical array witness.