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Vol. 7 No. 7 September 2008

Centralize virtualization at the switch

Storage virtualization can reside in the fabric switch, an appliance or in the array's controller. Each architecture has its pros and cons. Fabric-based virtualization products haven't been adopted as quickly as inline virtualization appliances like IBM Corp.'s SAN Volume Controller (SVC), but they're one of the most promising storage virtualization solutions. "Fabric-based virtualization is the best technical approach to storage virtualization but it's not taking off," says Jim DeCaires, storage product marketing manager at Fujitsu. Switch-based virtualization brings many benefits to the SAN fabric. Because the switch-based virtualization engine is out-of-band (out of the data path), there's no need for server agents, and it's the most scalable and highest performing of all virtualization architectures. Storage virtualization sends data to physical arrays, from single or multiple vendors, as a single storage pool with the following benefit: storage can be managed as if it was on a single array, from provisioning to advanced ...

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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

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SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

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