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Disaster recovery in the cloud

Ezine

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Hybrid cloud disaster recovery (DR) appliances are an emerging class of business continuity product that makes effective and timely DR affordable for even the smallest of firms.

The term "disaster recovery plan" can have a range of definitions, from a hot-site data center that provides failover in seconds to a small business owner taking backup tapes home in a backpack. In reality, most companies fall somewhere in between these two extremes. They don’t need recovery in seconds, and couldn’t afford a redundant infrastructure anyway, but they certainly need more than a system that relies solely on backup tapes.

With asynchronous replication now commonly available on storage and networking devices, getting data transferred to a remote facility or to a

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cloud service has become relatively easy. This capability has been sold as a way for companies of all sizes to implement a disaster recovery (DR) solution.

However, recovering from a disaster requires critical applications to be restarted and their services restored to users, a process that involves more than simply moving data off site. But bringing large data sets back from a remote site and restarting critical servers can take hours or days to complete. For companies that need recovery times in minutes, or maybe an hour, replicating data to the cloud isn’t an effective DR solution.

This was first published in August 2012

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