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Oracle

Data Guard or Storage based replication?

Bart Sjerps 2011-09-28 Oracle 6 Comments

A comparison between Oracle (Active) Data Guard and EMC replication for disaster recovery purposes This is an article I wrote a while ago for customers’ Database Administrators (DBAs) and application managers, that helps them in selecting the right Disaster Recovery…

 3,365 total views

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Monkey Business

Bart Sjerps 2011-08-31 General, Innovation, Oracle 1 Comment

Maybe you have heard the story of the Monkey Experiment. It is about an experiment with a bunch of monkeys in a cage, a ladder, and a banana. At a certain point one of the monkeys sees the banana hanging…

 1,609 total views

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Eliminate Hot Backup with EMC consistency technology

Bart Sjerps 2011-08-26 Oracle 3 Comments

For many years, EMC customers have been using storage replication technology to create copies of entire databases. Using storage cloning has many advantages over other mechanisms (file copy, tape restore, and the like). Most significant is that EMC storage can…

 1,120 total views

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Through the wormhole with Stretched Clusters

Bart Sjerps 2011-08-17 Innovation, Oracle, VPLEX 5 Comments

Last year, EMC announced a new virtualization product called VPLEX. VPLEX allows logical storage volumes to be accessible from multiple locations. It boldly goes beyond existing storage virtualisation solutions (including those from EMC) in that it is not just a…

 1,533 total views

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Stretched Clusters – Alien storage

Bart Sjerps 2011-08-15 Oracle, VPLEX No Comments

In my previous posts I described how Oracle ASM can be used to build stretched clusters. I also pointed to some limitations of that scenario. But I am by far not the first one in doing so – and some…

 856 total views

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