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Vol. 3 No. 12 February 2005

D2D Backup: Disk's dual role

Your backup choices are much greater and more complex compared to the days when you simply had to choose a backup application and tape library. Disk has solved the reliability and performance issues that most storage managers have experienced with traditional backup systems, but disk-to-disk-to-tape (D2D2T) has complicated the backup and restore processes. Users must now choose from among three backup architectures and four types of disk-based backup targets. This three-part series on disk-to-disk (D2D) backup describes the pros and cons of each approach to help you clarify your choices. The traditional backup architecture Before explaining how the different D2D backup options work, it's important to understand the backup systems they'll work with and why you might want to augment those systems with disk. In a traditional backup architecture (see Traditional backup architecture, this page), software resides on the backup client (the server to be backed up) that allows the backup server to transfer that client's data to tape, ...

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Features in this issue

  • No-sweat SAN design

    Whether you're planning a new storage area network (SAN) or dealing with the growing pains of an existing one, SAN design tools can ease the process.

  • E-mail archivers keep companies legit

    Storage managers must deal with stricter government regulations and rapidly escalating e-mail stores. There are many e-mail archiving programs available, but finding the one that best meets your company's needs is the key.

  • D2D Backup: Disk's dual role

    In part one of a three-part series on disk-based backup, we describe how SAN disk-as-disk and NAS disk-as-disk work, as well as the pros and cons of each configuration.

  • Backup exec: Time to grow up

    New version of Backup Exec catches up with Windows growth.

  • Scaling SANs

    Horizontal and vertical scaling are two methods of improving a SAN's capacity and performance. We discuss how to choose the appropriate approach for your environment.

Columns in this issue

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