The Varieties of Disk-to-Disk Backup Solutions
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Overview: The backup-and-recovery tapes are still spinning in data centers all over the world. But as backup windows continue to shrink, due to the prevalence of online business functions, many businesses are looking for ways to add disk to their backup infrastructures to speed up the backup, and more importantly, the restore processes. Tape operators scurried from one tape drive to another, mounting and dismounting tape media, to keep the backup jobs running. Sometimes a job had to wait until the operator could find the right tape. In some implementations, the disk systems appear to the operating system as disk.