A2zDataRecovery

Backup and data recovery were tape-based and served the purposes well at one time. Systems were idle during the night when backups could be performed without interrupting operations. However, when business became globalized and 24/7 Web business appeared, such nightly backup windows disappeared.

Data replication to a remote server entered the scene to overcome the problem. All data now resided on two servers and if one could not be operated, users could be switched over to the backup server. No downtime for backing up was needed and operations could proceed uninterrupted even if one server became inoperative.

But data replication could not help if data got corrupted owing to some reason. Both the original and replication would reflect the corruption and any deletions. And data recovery proper could take hours or days. It is in this context that the Continuous Data Protection (CDP) option becomes relevant. CDP allows rolling back to an earlier period before the corruption occurred and starting from there.

Read the story at:
http://www.businesscomputingworld.co.uk/?p=3719