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Vol. 3 No. 4 June 2004

Continuous protection

RPO and RTO The recovery of critical data in an environment is measured by two key parameters: recovery point objective (RPO) and recovery time objective (RTO). RPO measures the maximum acceptable age of data at the time of an outage. RTO is the maximum acceptable length of time to resume operation following an outage. Source: Revivio For 50 years, storage was in its Stone Age, where tape was the alpha and omega of data protection. Recently, disruptive technologies such as cheap disks and networking have ushered in a revolution in storage technology. Continuous backup or more accurately, continuous data protection (CDP), changes the rules by using disk technology to continuously capture updates to data in real time or near real time. The result: Backup windows become irrelevant because backup is occurring all the time. But the main benefit of this technology is not on the backup side of the equation. Rather than the single point-in-time access to data that traditional products provide, this technology promises any point-in-time ...

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Features in this issue

  • NAS on a grand scale

    by  Stephen Foskett

    Do you want to rid yourself of a backup window or two? Continuous backup--also know as continuous data protection--is changing the rules by backing up in real time, or close to it.

  • Down-to-earth HBAs

    Finally, there's an HBA for everyone. Vendors are creating HBAs that are functional and affordable, even for smaller shops.

  • Exchange and NAS On Again

    Microsoft has revised its "No Exchange on NAS" policy to "No Exchange on non-Microsoft NAS."

  • Storage on demand

    Tired of overbuying, overconfiguring or overallocating storage? Utility storage--used in a similiar fashion as electricity or water in your home--may be the answer to your prayers.

  • Continuous protection

    by  James Damoulakis

    Do you want to rid yourself of a backup window or two? Continuous backup--also know as continuous data protection--is changing the rules by backing up in real time, or close to it.

Columns in this issue

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

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