depending what you want to archive as a goal. Is it HA to switchover to the mirror/replica once your main storage failed? Or is it instead of backing up to tape/disk?
Both requirements can be addressed by QUADROtech EVnearSync. It allows you a storage independent object base replication with a RPO of 0 (Allowed Dataloss in case of disaster) and a RTO (Time data is back after a disaster) of some seconds.
You might want to have a look: http://www.quadrotech-it.com/products/evnearsync/
Yes, this is what I can see from the old / existing EV 8/9 that is currently set now.
It was set by my predecessor to use EMC Replication Manager to replciate the LUNs from prod to DR.