The Longhorn team would generally not recommend it. Writes in Longhorn are synchronous to all replicas. Unless the connection is very stable, with high bandwidth and low latency, you will see degraded performance. For example, our performance benchmarking shows random write latency of a v1 engine Longhorn volume at 2 ms. Assuming the geos are significantly far away (New York to Los Angeles is ~70 ms), you could be slowing down random write performance by many times.