5.10. Summary
Backup operations have evolved in terms of both user requirements and the technology used to accomplish backups. Usage requirements have dictated that backups be made more frequently, yet without disrupting application access to data. Backup operations evolved from stand-alone backups to backup operations happening across a LAN to backup operations happening in a SAN environment. One problem that backup applications need to solve is backing up open files being accessed by active programs while the backup is being done.
In addition, backup applications have had to deal with a multitude of APIs that are specific to an application version and specific to an operating system version. Yet another trend has been to create the initial ...
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