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Vol. 7 No. 7 September 2008

SMBs move beyond the VTL interface

there was a time when the vast majority of disk-based backup products relied on the virtual tape library (VTL) interface because most backup software tools could only "see" tape. VTL interfaces let those software tools think they were writing to tape drives, when they were actually writing data to disk arrays. Over the last two years, backup software tools have been updated to "see" disk as disk, and the major players--CommVault's Simpana EMC's NetWorker, IBM's Tivoli Storage Manager and Symantec's Veritas NetBackup--don't necessarily require the VTL interface to write backups to disk anymore. The first users to embrace disk backup systems without VTL are small- and medium-sized companies, which were also among the first to replace tape cartridges en masse with removable hard drives for offsite storage. Tape management put more of a burden on firms with small IT staffs, according to industry experts. "In our market, when we put disk systems in, the user typically doesn't have tape on site," says Bill Andrews, president and CEO ...

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Features in this issue

  • Ask the Experts: RTOs and RPOs

    Is there a standard ratio between RTOs and RPOs, or are they independent of each other?

  • CDP in depth

    Continuous data protection (CDP) technology is now a viable alternative to traditional backup software and storage system-based replication software. But CDP products can vary significantly, especially in the context of different storage architectures. Depending on specific environments, companies may have to evaluate very different criteria before settling on a CDP product.

  • The lure of open-source backup programs

Columns in this issue