This Symmetrix 3000 and 5000 family software provides an online, host-independent, mirrored data storage solution that duplicates your production site data. When your main systems are down, SRDF enables fast switchover to the target copy data, so that critical data is available again in a matter of minutes. SRDF provides complete business continuance capability during the unlikely event of a data center disaster, and during planned events such as daily backups, scheduled maintenance, and data center migrations or consolidations. These BCVs can be used to run simultaneous tasks in parallel with one another, such as data warehouse loads, Year 2000 and European currency conversion testing, and data backups. In a real disaster, systems rarely fail all at once.
Links come and go, and volumes shut down over a period of seconds, even minutes.
The challenge during this rolling disaster is to maintain data integrity by immediately identifying which secondary volumes are in synch with the primaries and which are not. With PPRC, IBM has provided two methods of addressing this problem. If a problem occurs, the ERP logs the error information and copy volume status information before sending completion status back to the host. In the event of a disaster or operations failure at the primary data center, the remote location provides continuous data access without intervention. Windows NT users will also be happy to note that MTI' s remote mirroring solution requires an investment often fifty percent less than the competition's offering.