Remote Copy Application Processing
Remote copy applications use storing level functions that work with SCSI processes, commands, and data. This means that primary, secondary, and tertiary storage will have identical storage address spaces, because the commands forwarded by remote copy specify the block address where the update is to be made.
If the remote site storage needs to be used to access data after a disaster, a system will need to connect to the storage and mount it as local storage. This system will need to be able to access and use the same filing system as the one that is used by the application system at the primary site.
The Remote Copy System
It helps to think of the workings of a remote copy application as being a distributed system ...