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  • Blog Post: Site Resilience Impact on Availability

    This article continues the analysis I started in my previous article, DAG: beyond the “A” . We all understand that a good technology solution must have high levels of availability, and that simplicity and redundancy are the two major factors that drive solution availability. More specifically...
  • Blog Post: The Preferred Architecture

    During my session at the recent Microsoft Exchange Conference (MEC), I revealed Microsoft’s preferred architecture (PA) for Exchange Server 2013. The PA is the Exchange Engineering Team’s prescriptive approach to what we believe is the optimum deployment architecture for Exchange 2013, and one that is...
  • Blog Post: Responding to Managed Availability

    I’ve written a few blog posts now that get into the deep technical details of Managed Availability. I hope you’ve liked them, and I’m not about to stop! However, I’ve gotten a lot of feedback that we also need some simpler overview articles. Fortunately, we’ve just completed...
  • Blog Post: Announcing Enhanced Hardware Virtualization Support for Exchange 2010

    The Microsoft Exchange team is enhancing positioning by including additional supported scenarios regarding Exchange Server 2010 running under hardware virtualization software. As of today, the following support scenarios are being updated, for Exchange 2010 SP1, and later: The Unified Messaging...
  • Blog Post: CCR, Site Resilience and sample decision making processes...

    The ability to continue to provide a full service to your user community in the event of the loss of a data center is an increasingly common requirement. The use of Cluster Continuous Replication (CCR) with Exchange 2007 is an obvious choice in providing some of the functionality to meet this requirement...
  • Blog Post: How the Transport Dumpster works with a CCR cluster

    Transport Dumpster is a new feature of Exchange Server 2007 Hub Transport servers through which the transport can defer the deletion of certain emails in their queues. The condition for an email to be retained in the transport dumpster is that at least one of the recipient’s mailboxes must resides on...
  • Blog Post: Veritas Storage Foundation and Microsoft Exchange

    Executive Summary The dynamic disk management functionality in Microsoft® Windows® 2000 Server and in Microsoft Windows Server 2003 is based on technology licensed to Microsoft by VERITAS Software Corporation. VERITAS Volume Manager for Windows (now called VERITAS Storage Foundation for...
  • Blog Post: Exchange 2007 Mailbox Server Role Storage Requirements Calculator updated to v 13.0

    It's been a while since we announced an update to Exchange 2007 Mailbox Server Role Storage Requirements Calculator. Yesterday we have updated the calculator to version 13.0. Updates: We have updated the log generation numbers per message profile to be in line with our updated guidance. In...
  • Blog Post: Significant update to the Mailbox Server Role Storage Requirements Calculator - v 13.7

    Please go to our Mailbox Server Role Storage Requirements Calculator updates tracking page to see what is in this new version! Some great new enhancements and features such as: Projected Number of Mailboxes Growth Network Failure Tolerance Multiple Mailbox Server Support ... and more...
  • Blog Post: Video Series: Exchange 2007 SP1 Standby Continuous Replication (SCR)

    Beta 2 of Service Pack 1 Exchange Server 2007 is available for public download and preview for MSDN and TechNet subscribers. As I wrote in my blog entry, Standby Continuous Replication in Exchange Server 2007 Service Pack 1 , SCR extends the continuous replication technology in Exchange 2007, enabling...
  • Blog Post: The New Cluster “Clean Upgrade” Method

    Prior to releasing Exchange Server 2003 we didn’t test this scenario, and since we only support scenarios that we have tested and have confidence in this was considered unsupported. However, with so many customers interested in this method of upgrading we decided to test it and document the process...
  • Blog Post: High Availability in Exchange Server 2010

    Now that Exchange Server 2010 has had its first birthday , it's a good time to remind folks about the built-in features for high availability, site resilience and disaster recovery in Exchange 2010. If you're already running Exchange 2010, then you probably already know about database availability groups...
  • Blog Post: Placement of the File Share Witness (FSW) on a Geographically Dispersed CCR Cluster

    Update 6/4/2008: Please note that we have posted our new guidance around this subject here: New File Share Witness and Force Quorum Guidance for Exchange 2007 Clusters . Exchange Server 2007 introduced Continuous Cluster Replication (CCR), which utilizes the log shipping and replay features of Exchange...
  • Blog Post: Potential for database corruption as a result of installing Exchange 2007 SP3 RU3

    Update 3/31/2011: The updated Exchange 2007 SP3 RU3 has been released. See Announcing the Re-release of Exchange 2007 Service Pack 3 Update Rollup 3 (V2) . 3/30/2011: We posted a status update for this issue. See Exchange 2007/2010 Rollup 3 Status Update . Over the weekend, the Exchange Product Group...
  • Blog Post: Exchange 2007 Mailbox Server Role Storage Requirements Calculator updated to v 16.8

    EDIT 04/27/2009: We have updated the calculator to v16.9 to address a bug that was found . Please go to our Mailbox Server Role Storage Requirements Calculator updates tracking page to see what is in this new version! A blog post explaining the calculator (updated for this new version) is here...
  • Blog Post: Exchange 2007 Server Installation Guide Updates

    We have made the following updates to the installation guides: We have finally released an Windows Server 2008 Cluster Continuous Replication Installation Guide (yeah we know it was a way overdue): http://technet.microsoft.com/en-us/library/dd425009.aspx We have made the following changes to...
  • Blog Post: Standby Continuous Replication in Exchange Server 2007 Service Pack 1

    Standby continuous replication (SCR) is a new feature being introduced in Service Pack 1 for Microsoft Exchange Server 2007. As its name implies, SCR is designed for scenarios that use standby recovery servers. SCR extends the existing continuous replication features and enables new data availability...
  • Blog Post: Designing a Highly Available Database Copy Layout

    Update 10/21/11 : To read the related TechNet documentation, please go here , here and here . Exchange 2010 introduced the database availability group (DAG), which enables you to design a mailbox resiliency configuration that is essentially a redundant array of independent Mailbox servers. Multiple...
  • Blog Post: Preserving Activation Blocks After Performing DAG Member Maintenance

    In Exchange 2010, when a database availability group (DAG) member needs service, it can be placed into maintenance mode. Exchange 2010 includes scripts the StartDagServerMaintenance.ps1 and StopDagServerMaintenace.ps1 scripts to place/remove a DAG member from maintenance mode. For a summary of what these...
  • Blog Post: Videos: Installing Exchange 2007 SP1 CCR on Windows Server 2008

    Now that Exchange Server 2007 SP1 is available, I thought I'd demonstrate installing Cluster Continuous Replication on Windows Server 2008. As stated by Scott Schnoll in his blog post , Windows Server 2008 includes a number of improvements and enhancements that can directly benefit servers running Exchange...
  • Blog Post: Exchange 2007 SP1 Continuous Replication Disaster Recovery Decisions flowcharts

    The ability to continue to provide a full service to your user community in the unlikely event of the loss of a datacentre is an increasingly common requirement. Continuous Replication (CCR and SCR) with Exchange 2007 Service Pack 1 can be used to provide both data availability and site resilience. ...
  • Blog Post: Major update to the Mailbox Server Role Storage Requirements Calculator - v 11.0

    Please go on our Mailbox Server Role Storage Requirements Calculator updates tracking page to see what is in this new version! A blog post explaining the calculator (updated for this new version) is here . Comments welcome! - Ross Smith IV
  • Blog Post: Windows team Clustering and High Availability blog (re)starting

    Folks over on Clustering and High Availability blog have decided to (re)start their blog . Seems like they have lined up some good content which they should start posting soon (January 2008 is here after all)! So - if clustering and high availability is something you are interested in - this one might...
  • Blog Post: Continuous Replication Deep Dive White Paper is here...

    Many of you have been wondering how continuous replication works in Exchange 2007. The Continuous Replication Deep Dive whitepaper discusses how log shipping, log inspection, and log replay work within Exchange 2007. In addition, the paper discusses the mechanics of how scheduled and unscheduled outages...
  • Blog Post: What Did Managed Availability Just Do To This Service?

    We in the Exchange product group get this question from time to time. The first thing we ask in response is always, “What was the customer impact?” In some cases, there is customer impact; these may indicate bugs that we are motivated to fix. However, in most cases there was no customer impact...