Alternative disaster recovery methods
This section compares the Data Protector disaster recovery concept with concepts of other vendors. This section points out only significant aspects of alternative recovery concepts. Two alternative recovery approaches are discussed:
Recovery methods supported by operating system vendors
Most vendors provide their own methods, but when it comes to restore, they typically require the following steps:
1.Reinstall the operating system from scratch
2.Reinstall the application(s)
3.Restore application(s) data
Excessive manual reconfiguration and customization of the operating system and the application(s) is required to reconstruct the status before the disaster. This is a very complicated, time consuming, and
Recovery using
This often consists of a special tool that backs up the system partition as a snapshot, which can be restored rapidly. The method conceptually requires the following steps:
1.Restore the system partition (using the
2.Restore any other partition (perhaps selective) if required using the standard backup tool
It is obvious that one has to work from two different backups with different tools. This is a difficult task to perform on a regular basis. If this concept is implemented for a large organization, the administrative overhead to manage the different versions (weekly backup) for the data from two tools must be addressed.
Data Protector on the other hand represents a powerful
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