In my last post, I gave a highly simplified representation of “The I/O stack” of a database. In reality, it’s much more complex. I found an old picture where the whole I/O stack of a database was described and I…
POC: Piece Of Cake or Point Of Contradiction?
Every now and then I get involved in Customer Proof of Concepts. A Proof of Concept (POC) is, according to Wikipedia, something like a demonstration of feasibility of a certain idea, concept or theory.
Data Guard or Storage based replication?
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…
Monkey Business
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…
Eliminate Hot Backup with EMC consistency technology
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…