Common mailbox recovery scenarios for hybrid environments

Within the support organization at Microsoft we definitely see cases where customers are trying to recover deleted mailboxes. Typically, by the time a customer has contacted us they have tried everything they know as well as suggestions found online to recover the mailbox. It is often a completely avoidable and honest mistake that led to…


Ask the Perf Guy: Sizing Exchange 2016 Deployments

Uh oh. You are probably thinking to yourself, here comes another one of those incredibly long blog posts about sizing. Thankfully, it’s not. If you want to fully understand the sizing process for Exchange 2016, you are certainly welcome to read the previous post that I did for Exchange 2013, as the overall process is…


Exchange Server Role Requirements Calculator Update

v7.8 of the calculator introduces support for Exchange 2016! Yes, that’s right, you don’t need a separate calculator, v7.8 and later supports Exchange 2013 or Exchange 2016 deployments. Moving forward, the calculator is branded as the Exchange Server Role Requirements Calculator. When you open the calculator you will find a new drop-down option in the…

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Ask The Perf Guy: What’s The Story With Hyperthreading and Virtualization?

There’s been a fair amount of confusion amongst customers and partners lately about the right way to think about hyperthreading when virtualizing Exchange. Hopefully I can clear up that confusion very quickly. We’ve had relatively strong guidance in recent versions of Exchange that hyperthreading should be disabled. This guidance is specific to physical server deployments,…


Ask the Perf Guy: How big is too BIG?

We’ve seen an increasing amount of interest lately in deployment of Exchange 2013 on “large” servers. By large, I mean servers that contain significantly more CPU or memory resources than what the product was designed to utilize. I thought it might be time for a reminder of our scalability recommendations and some of the details…


Exchange 2013 Calculator Updates

Today, we released an updated version of the Exchange 2013 Server Role Requirements Calculator. In addition to numerous bug fixes, this version includes new functionality: CPU utilization table, ReplayLagManager support, MaximumPreferredActiveDatabases support, Restore-DatabaseAvailabilityGroup scenario support, and guidance on sizing recommendations. You can view what changes have been made or downloadthe update directly. For details on…

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Exchange 2013 Monitoring Mailboxes

Introduction Exchange Server 2013 introduced a new feature called Managed Availability, which is a built-in monitoring system with self-recovery capabilities. Managed Availability performs continuous tests (probes) that simulate end-user actions, to detect possible problems with Exchange components or their dependencies. If probes are failing, it performs gradual simple recovery actions to bring the affected component…


Want more control over Sent Items when using shared mailboxes?

Edit 6/15/2015: We are starting to make this feature available again in Office 365. Note that the new shared mailbox sent items behavior is disabled by default and if Admins want it enabled, they can do so by using CMDlets mentioned below. Additionally, we are still on track to ship this to our on-premises customers…


Single-Click Mailbox Conversion

Update: If you need to perform the User > Shared mailbox conversion to preserve access to mailbox of employee that has left the company, we recommend that you follow the Remove a former employee from Office 365 article first, to properly disable access to the mailbox. Then – to preserve the mailbox, perform the conversion…