6.1. Why Do Backups?
Backup is a tedious, costly, and usually thankless task in an Information Technology department. Yet there are few who would risk the company’s data (and their own job security) by instituting a policy of not backing up.
Storage Area Networks impose new demands on the backup and restore process, yet they also offer new possibilities that may make backup and restore operations simpler and more efficient than ever before.
This chapter reviews the rationale, principles, and building blocks of backup and restore. It then shows how backup and restore operations fit into the world of the SAN.
6.1.1. What’s a Backup?
Backup describes an operation that makes a copy of vital data at an optimal time. The term “backup” also describes ...