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Vol. 4 No. 7 September 2005

Data migration: Tales from the trenches

Organizations need to migrate data more often than they think. It's no longer just once every three years when the lease expires on the old storage and a new storage array arrives. Today, companies can find reasons to migrate data almost every week. "Data migration has changed," says Greg Schulz, senior analyst, Evaluator Group Inc., Greenwood Village, CO. "It used to be used for technology replacement--now it's used for a wide variety of maintenance tasks." Even technology replacement has become a continuous event. "We now replace one-third of our disk storage every year," says Robert Bellanti, vice president of data center engineering at KeyCorp, a Cleveland-based bank. The bank's storage is still on a three-year lease, but one-third of it comes up for renewal every year. KeyCorp may also bring in additional storage to accommodate growth. As a result, the bank finds itself migrating data among storage arrays throughout the year. Data migration for the purpose of technology replacement is just one of the reasons compelling ...

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Features in this issue

  • Use mainframes for backups

    You can put that big iron sitting in your data center to better use by using it to back up open-systems data, too. The net effect is a streamlined backup and disaster recovery operation.

  • Any-point-in-time backups

    by  Brad O'Neill

    Continuous data protection captures changes at a file- or block-level as they happen, and provides running recovery journals for all historical data states. This shifts data protection to a more flexible any-point-in-time framework.

  • 10 basic steps for better backup

    The most evident common denominator in well-functioning backup infrastructures is effective process and control. This checklist highlights 10 areas you should focus on to build a better backup practice.

  • Make tape libraries work with all platforms

    If tape libraries could share IT resources and data across all processing platforms, data center complexity and cost could be dramatically reduced.

  • Sizing up VTLs

    Virtual tape libraries present disk as tape, so backup apps can perform backups as usual, regardless of the physical backup infrastructure. Learn about hardware and software VTLs, the benefits of each and how they might fit into your backup operation.

  • Does host-based replication still make sense?

    Host-based replication is a mature technology, but it's often not considered an option for architectures that support quick recovery. But there are many cases where a host-based option may fit.

  • VTL remedies backup woes

    VTLs remedy tape bottlenecks...

  • Cisco's switch-based backup

    Serverless backup can take the load off servers and ease network traffic. Cisco uses Xcopy on its MDS 9000 switch for serverless backup; see how it compares to other methods and products.

  • Used tape sales on the rise

    by  Alex Barrett

    Pre-used tapes are becoming a popular and inexpensive trend among IT professionals. Become familiar with the possible risks of using used tape in your environment.

  • How disk has changed backup

    Inexpensive disk has spawned a variety of disk-based backup alternatives. But with more choices comes greater complexity compared to the days when you simply had to choose a backup application and tape library. Backup guru W. Curtis Preston explains the advantages of using disk for backup, including virtual tape libraries and disk-as-disk backup targets, and discusses the pros and cons of alternative disk-based backup methods.

Columns in this issue

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