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Vol. 1 No. 12 February 2003

Caches with the Write Stuff

Do you think that collaborative file creation, editing, storage and management between geographically distributed users is a pipe dream? A new generation of startups doesn't think so. By combining traditional caching with techniques such as compression and two-way differential transfer, vendors DiskSites and Tacit Networks claim they can give remote users both read and write access to data over the WAN, at LAN-like speeds. DiskSites' product, the W-NAS, consists of the DiskSites FilePort and the FileCache appliance. Posing as a CIFS/NFS file server, FilePort resides in the main office, and connects to the FileCache appliance in the remote office, managing caching and data transfer. To cut down on the amount of data that travels over the wire, W-NAS transmits only those bytes that have actually changed. The result: Assuming a 128Kb/s connection with 100ms latency, and a 90% cache hit rate, DiskSites estimates that it can save a 600KB Word file in nine seconds--and 245 seconds without it. Tacit Networks claims similar performance ...

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Features in this issue

  • Midrange Arrays Inherit High-End Smarts

    Virtualization layers, once a feature of only the most expensive storage subsystems, are beginning to ship with midrange storage systems.

  • Optimize database storage

    by  Jim Booth

    In this article, author and consultant Jim Booth maintains that different database objects may each require their own type of storage to make the database operations run more smoothly. Whether you're dealing with tablespaces, indexes, redo logs or archives -- there's a right and wrong storage choice for each database component. This article explains what they are.

  • Inside the new Symmetrix

    by  Michael Desmond

    Inside the new Symmetrix

Columns in this issue