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For Ramirez, associate director of administrative information services at USC, the four-hour backup window meant the applications were staying down much longer than she liked. Aiming to close the window to a mere crack, USC recently implemented Sun's StorEdge Availability Suite to begin doing backups using point-in-time snapshots.
The move has reduced downtime and laid the foundation for a more robust data availability model. In this model, databases are quickly duplicated using Sun's StorEdge Instant Image snapshot software. One mass data copying job will initially establish the working data set, while regular delta updates will ensure the snapshots stay up to date as data changes.
Once the snapshot has been made, USC will back it up onto tape--a process that is no longer time-sensitive
"It's going to provide higher reliability and protection when it comes to data recovery," Ramirez says. "We can be back up and running within half an hour using the snapshot, and get our users back onto the systems faster."
|Getting your data from here to there|
Both software and hardware vendors offer a number of snapshot and replication solutions. Here are the tools to look for, depending on your need.
This was first published in June 2003