D-PST-DS-00: Dell PowerStore Design

By Dell · Question Mode

QuestionQ15

Solution Design

A customer needs to replicate several volumes to safeguard an application. Any latency exceeding 15 ms will make the application crash. The circuit-mile distance between the two sites is 1,000 miles.

Which replication method should the Storage Architect recommend?

Explanation

Asynchronous replication acknowledges writes locally and transfers changes to the remote site without placing the intersite round-trip latency in the application write path. At 1,000 circuit miles, synchronous and Metro replication would add remote-write latency beyond the application’s 15 ms tolerance; Metro is a synchronous, low-latency configuration.

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