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Vol. 4 No. 6 August 2005

Bridging the gap

High-speed optical WANs are becoming indispensable for critical storage applications. Business continuance, remote mirroring and replication, and connecting regional data centers are all tasks that require optical WANs. With many optical options and prices, picking the best technologies and techniques to transport data is challenging. Most storage apps are time-sensitive and require high throughput (bandwidth) and low latency with zero data loss. Effective bandwidth is a measure of how much of the available bandwidth can actually be used, taking into consideration dropped packets and retransmission due to congestion and protocol inefficiency. Some vendors, including Ciena Corp., Linthicum, MD, refer to effective bandwidth as "good put" vs. simply looking at a theoretical line speed number. To pick a data transport to fit your needs, first consider your storage requirements: Distance. How far away do you need to keep a copy of your data? Bandwidth. How much data must be moved and in what timeframe? Cost. What's your budget? ...

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Features in this issue

  • Bridging the gap

    Many disaster recovery and remote backup programs rely on an efficient, cost-effective WAN. Fiber-optic network technology is often required for long-distance data transmission, but you need to know what transport is best and the related implementation issues.

  • Monolithic going modular

    Monolithic systems go modular

  • DR testing infrequent at best

    Have you tested your DR plan?

  • Storage for manufacturing

    Manufacturing environments typically have different storage requirements than corporate apps, and have to deal with globally dispersed design teams as well as growing regulatory concerns. Here's how several prominent manufacturers have met the challenge.

  • New tools to classify data

    by  Brad O'Neill

    Putting data on storage systems appropriate to its value requires the ability to classify data. An emerging category of applications, Information Classification and Management apps, can index enterprise information and execute precise actions based on its content.

Columns in this issue

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

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