When 98% is Good Enough!

I get asked a lot when or how do we know a migration has been successful.

I usually aim for 98% of mail for 98% of mailboxes.

If 98% of mailboxes move, and or 98% of messages migrate, this to me is a successful migration.

You may well do better than this, in a like-for-like source-target scenario, on-prem to cloud based Exchange 2010, there is no reason why you shouldn’t get 100% of your mail to migrate for 100% of your mailboxes, but this is probably the exception rather than the norm.

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Clustering and DFS

I’m currently involved in an NDS to AD migration for around 2,000 users and 2 Terabytes or so of data. We are replacing ZEN and eDirectory with SCCM and AD, as well as moving files, folder, permissions etc with Quest software.

One of the project goals is to make the new file/print solution highly available, so we’ve been looking at DFS and Failover Clustering.

To me each of these technologies has advantages and disadvantages.

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The Dunning-Kruger Effect

The Dunning–Kruger effect is defined by Wikipedia as a “cognitive bias in which unskilled individuals suffer from illusory superiority, mistakenly rating their ability much higher than average.”

The research that coined the term was carried out at Cornell University in 1999 by Justin Kruger and David Dunning, although the observation has been made before.

“Ignorance more frequently begets confidence than does knowledge”

Charles Darwin

“In the modern world the stupid are cocksure while the intelligent are full of doubt”

Bertrand Russell

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Welcome to the new look Cheddon Limited website!

The new website features much of the same content as the original website with updates where appropriate to reflect the ever changing technology landscape.

It’s based on the feature rich “eDegree” WordPress theme.

As well as holding static content, eDegree allows for a blog element which we intend to use extensively to publish content in “Notes from the field”, where we intend to share hands on particle experiences encountered during the projects we deliver.

You can subscribe the “Notes from the field” via RSS to be kept up to date on new content as it is made available.

Please have a look around, and let us know if there is anything we can help you with.