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Vol. 7 No. 7 September 2008

Gen2 virtual tape libraries: Hot Spots

From disaster recovery to capacity optimization and dedupe, the next phase of VTLs promises major change. When virtual tape libraries (VTLs) emerged several years ago, they improved how backup applications wrote data to disk. Tape-centric backup applications understood how to communicate with and manage tape devices, and then write data in tape format. VTL vendors that launched those initial solutions were focused mostly on developing the emulations for popular Fibre Channel (FC) tape libraries; proving compatibility with leading backup apps; ensuring that the VTL wasn't a single point of failure in the backup process; and figuring out how to get virtual tape copies easily offsite for disaster recovery (DR) purposes. VTL vendors masked any complexity by packaging their solution as a purpose-built appliance and partnering with disk vendors to deliver turnkey solutions. Disk-based backup continues to evolve as adoption increases and new requirements are uncovered. Here's a snapshot of user adoption from Enterprise Strategy Group (...

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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