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Backup and disaster recovery techniques: a look back and forward.

Publication: Computer Technology Review
Publication Date: 01-OCT-05 		Format: Online
Delivery: Immediate Online Access
Full Article Title: Backup and disaster recovery techniques: a look back and forward.(first in/first out)

Article Excerpt
If you used backup and disaster recovery techniques from just five years ago in today's datacenter, you definitely wouldn't get the job done. If you tried techniques from ten years ago, you couldn't even get started. To begin, the average size of a large data center has grown from hundreds of gigabytes to hundreds of terabytes, and some have grown to over a petabyte. In addition, the number of applications has grown as well. Finally, recovery expectations have also increased. The storage industry and storage managers have done their best to keep up with the demand, but not every advancement has helped.

The basic defense ten or so years ago was locally attached tape drives and native backup and recovery tools. This proved to be quite difficult to manage, bringing in the advent of network-based backup programs, which have dominated the backup and recovery market for several years now. The basic design of such a system is one or more tape drives behind a backup server that backs up all other clients across the network.

While the network backup server solved a lot of problems, the growth in the average size of a datacenter created...

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