Neil Johnson - a rock 'n roll nerd....

Mostly Exchange Server and Office 365, but probably some other stuff too...

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  • Blog Post: Jetstress Field Guide

    Last Updated : 21/06/2011 The field guide is released at major intervals on the Exchange Team Blog, however I have decided to keep dot release updates here to ensure that the very latest information is available to those that do a lot of Jetstress testing (yes, there are some of us that do a lot of stress...
  • Blog Post: Jetstress 2010 – Stress test problem

    Recently one of our partner has highlighted an issue in the current version of Jetstress that means the test may run in performance mode when in fact it should be running in stress mode. What's the difference between performance and stress mode? Put simply, performance mode validates the storage performance...
  • Blog Post: Jetstress 2010 and Background Database Maintenance

    Last week a colleague from the MCM Exchange 2010 community asked some questions about disabling Exchange Server 2010 Background Database Maintenance.  Essentially they wanted to know if they disabled  the checkbox for BDM, what would happen on the passive database copies? A response came back...
  • Blog Post: Outlook Performance Counters are missing…

    I have been working on a number of Exchange projects recently with cloud integration.  One common area of concern when you move a workload to the cloud is end user performance – will my users have an acceptable experience? To help customers make this decision I usually propose some form of user...
  • Blog Post: Analysing Exchange Server 2010 Jetstress BLG Files By Hand

    Quite often when I am working through Jetstress escalations I will ask to see the BLG files from the test. These files contain performance counter information that was logged during the test run and they show us a lot more about what is really going on than the data in the report HTML files. To keep...
  • Blog Post: Outlook 2010 - network latency test results

    Over the past 18 months I have been dealing with more and more cloud engagements.  One thing that crops up during the planning phase of all of these engagements is network link latency and bandwidth requirements. Bandwidth prediction is something I am working on in the background, but network link...