We have our main server, running Windows Server OS' AND Zenix/Unix. What we need done is the Zenix/Unix side COMPLETELY copied (or mirrored) to another unit to serve as a back-up in case the original unit goes down. We are a business with lots of important documents that we cannot lose, but must keep the old software running on the old system and on a new one (that we will provide) simultaneously and synced together. Basically, if the system goes down due to power outages, device failures, etc., we need to be able to pick up where it left off in an easy and quick manner. We currently do incremental backups everyday. We need a clone of our old system to ensure we have a backup that we can work from in case something goes wrong with the original unit. The software is written in COBOL. Need an expert!