The biggest challenge we faced was attempting replication between two different kinds of storage systems, like IBM on one side and Dell EMC storage systems on the other, before opting for VPLEX. Initially, making the two storage systems replicate was not an easy task. There was a splitting in the fiber switches at first. Then, the RPAs, which manage replication, would move the IO blocks to the second system. In the end, the two systems were not the same, which made it difficult to synchronize them. However, we succeeded in replicating smoothly with Oracle databases and Windows machines. When we acquired the VPLEX Virtual solutions, it became much easier. It was a piece of cake to do the replication between two VPLEX systems since they communicate in the same language.
