Data is the most important base pillar for a company to stand. If this important data is lost or gets corrupted due to any reason then whole business enterprise may collapse. Whether its operational data to support daily working or warehouse data kept for later analysis, some back-up plan should be there to support in case of this vital data being lost for any reason.
Many data back-up technologies exist like mirror server which keep mirroring the original server and can serve data in case of main server crash or if its offline due to maintenance or any other reason. Taking backup of system from time-to-time or mounting some real-time data backup system is the best option as is always said Prevention is better than cure. Though whatever the backup system one puts in place there are always chances of data being lost or corrupted due to hardware failure, virus attack or accidental deletion so a proper data recovery system should be installed in place to deal with and quickly recover from the set-back.
Companies should devise and implement some
disaster recovery plan so that if any unwanted problem occurs then important data is not lost and system downtime is as less as possible. Keeping data at same geographical location is good and quickly installing the backed up system is easy, but if any natural calamity like earthquake or flood happens then both system might get lost. Therefore, it is always advisable to keep back-up server at different geological location such techniques involve online data backup systems. The replication server can be companies own or can be provided by some trusted third party on a reasonable rate.
Transferring data online can be a risky affair as data is vulnerable to attackers but VPN and many other technologies do exist to provide support. Some of these systems are so tightly online integrated that no system downtime occurs and the replica is up for working as soon as the main server goes down. These backup and data recovery systems are vital for proper working of enterprise wide systems and help them survive in adverse situations.