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Vol. 3 No. 10 December 2004

Match snaps to apps

Snapshots provide many benefits across all types of applications and storage requirements. They can greatly enhance and simplify the data recovery process by reducing recovery time and providing more recovery point objectives (RPOs). They can enhance QA by reducing testing cycle times, and provide a basis for efficient updates of disaster recovery (DR) sites. But implementing snapshots requires planning and application analysis to determine what type of snapshot to use and how many to take. A snapshot is a point-in-time image of a collection of data. In general, snapshots can be broken into two types: full copy and differential copy. While most full-copy snapshots use similar techniques, there are several ways to implement differential snapshots, each with its advantages and disadvantages. The interesting thing about both techniques is that some of the advantages are also disadvantages. With a full-copy snapshot, the entire contents of a data set are copied to a different set of spindles. Copying the data may be done on a ...

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Features in this issue

  • Tape price hikes looming

    by  Alex Barrett

    In the coming months, expect to pay more for tape cartridges.

  • Match snaps to apps

    Snapshots are key to most shops' backup and recovery plans. But implementing them requires application analysis to determine the best type of snapshots to use and how often to take them.

  • Stress-free firmware upgrades

    Firmware upgrades can be daunting, but you can take some of the fear and frustration out of the process by preparing detailed documentation of your storage environment.

  • Storage salaries edge up

    Storage's second annual Salary Survey finds salaries and bonuses inching upward despite a still sluggish economy. Even with hiring remaining flat, 2005 looks promising for storage salaries.

Columns in this issue

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

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