Browse by Tags

  • Blog Post: New Support Policy for Repaired Exchange Databases

    The database repair process is often used as a last ditch effort to recover an Exchange database when no other means of recovery is available. The process should only be followed at the advice of Microsoft Support and after determining that all other recovery options have been exhausted. For many years...
  • Blog Post: Using an Azure VM as a DAG Witness Server

    I’m happy to announce support for use of an Azure virtual machine as an Exchange 2013 Database Availability Group witness server. Automatic datacenter failover in Exchange 2013 requires three physical sites, but many of our customers with stretched DAGs only have two physical sites deployed today. By...
  • Blog Post: Those pesky lazy indices

    In Exchange 2013 there are indices within a given mailbox database. The indices are created, maintained, and deleted by the Information Store Worker Process associated with a given database. These indices are not to be confused with the Exchange content indexes that are built via the Search Foundation...
  • 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...
  • 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: Database Availability Groups and Windows Azure

    At TechEd North America 2013, we announced that we had begun testing and validation of a new configuration for a database availability group (DAG) that would enable automatic site resilience when two datacenters were used in concert with a witness server that was deployed in a Windows Azure IaaS environment...
  • Blog Post: New File Share Witness and Force Quorum Guidance for Exchange 2007 Clusters

    In Exchange Server 2007 RTM and SP1, the Exchange team has published guidance for using a CNAME record in DNS as part of the provisioning process for the file share witness (FSW) component of a Majority Node Set (MNS) quorum on Windows Server 2003, and a Node and Share Majority quorum on Windows Server...
  • Blog Post: Exchange 2007 Mailbox Server Role Storage Requirements Calculator updated to v 15.6

    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 . Comments welcome! - Ross Smith IV Share this post :
  • Blog Post: Recommended Windows Hotfix for Database Availability Groups running Windows Server 2008 R2

    In early August of this year, the Windows SE team released the following Knowledge Base (KB) article and accompanying software hotfix regarding an issue in Windows Server 2008 R2 failover clusters: KB2550886 - A transient communication failure causes a Windows Server 2008 R2 failover cluster to stop...
  • Blog Post: Active/Passive Behavior on clusters with more than two Nodes

    Active/Passive configurations are enforced in clusters with more than two nodes (more than two Exchange nodes in Exchange 2003). This means that the scaling and monitoring limitations required for two-node Active/Active do not apply to clusters with more than two nodes. In clusters with more than two...
  • Blog Post: Server Component States in Exchange 2013

    Introduction In Exchange 2013 we introduced the concept of “Server Component States”. Server Component State provides granular control over the state of the components that make up an Exchange Server from the point of view of the environment it is running in. This is useful when you want to take an Exchange...
  • Blog Post: DAG: Beyond the “A”

    Definitions We all know that in the Microsoft Exchange world DAG stands for “Database Availability Group”. Database – because on a highly available Exchange 2010 Mailbox server, the database , not the server, is the unit of availability and it is the database that can be failed over or switched over...
  • Blog Post: Per-Server Database Limits Explained

    Over the past year, we have discussed the architectural changes that have been introduced in Exchange Server 2013. I wrote about the reduction in complexity that the new server role architecture introduces, as well as, the one of the new capabilities introduced in Exchange 2013, Managed Availability...
  • Blog Post: Exchange Tools vs. Cluster Tools: What's the Deal?

    Note: Since authoring this blog, Microsoft Customer Support Services has identified a scenario in which moving a CMS using the cluster tools can leave databases in a dismounted or offline state. During regular operation, the Microsoft Exchange Replication service maintains a "mount allowed" value for...
  • Blog Post: New High Availability Feature Article and Updated Support Guidance for Exchange 2010

    A database availability group (DAG), together with mailbox database copies, can provide automatic recovery from a variety of server, storage, network and other hardware failures. A DAG can also provide a site resilience solution so that you can perform a datacenter switchover in the event of a site-level...
  • Blog Post: Troubleshoot your Exchange 2010 database backup functionality with VSSTester script

    Download Frequently in support, we encounter several backup related calls for Exchange 2010 databases. A sample of common issues we hear from our customers are: “My backup software is not able to take a successful snapshot of the databases” “My backups have been failing...
  • Blog Post: New HA Design Guidance Articles

    Last week we updated our Exchange TechNet articles. Within that update are two new articles that I wanted to call out: Understanding High Availability Factors - This article summarizes my US TechEd 2010 Exchange 2010 High Availability Design Considerations breakout session by discussing several design...