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Vol. 2 No. 5 July 2003

EMC Launches Space-Saving Copy Option for Symmetrix

AEMC Launches Space-Saving Copy Option for Symmetrix favorite knock against high-end enterprise arrays such as EMC's Symmetrix, Hitachi Data Systems' (HDS) Lightning and IBM's Shark is that it costs an arm and a leg to protect them because the point-in-time cloning software they employ requires a one-for-one mirror of hardware and disk capacity. Now EMC has added copy-on-write snapshot software to the list of options you can purchase for Symmetrix. Called EMC Snap for Symmetrix, the software uses only about 30% of the disk space required to make a copy with TimeFinder, EMC's point-in-time cloning software. It works by making a pointer-based virtual copy of a volume, to which it subsequently writes only those blocks of data that are about to be changed in the physical base volume. But snapshots aren't for every environment, says EMC's Chuck Hollis, vice president of storage platform marketing. While snapshots cost less in terms of disk space, the snapped image relies on the same underlying physical block data, which can cause a ...

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Features in this issue

  • Close the IM Loophole

    NYSE sends message about instant messages

  • Roll Your Own NAS

    Is building your own NAS better?

  • Taming HBAs

    by  Jerome Wendt

    Installing, configuring and maintaining Fibre Channel host bus adapters (HBAs) is the bane of many SAN administrators. Thankfully, these new cards offer better management tools.

  • Creating a large e-mail system

    by  Jim Booth

    Here's how one storage team transformed a monolithic storage design into a flexible, scalable system.

  • IP SANs take their place

    There's a growing interest in using IP for storage in small to midsized enterprises, although Fibre Channel is still dominant in large organizations. What's right for you: IP, FC or a combination of both?

Columns in this issue

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