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Verifying log file truncation…
In support we see cases from customers regarding log file truncation. One question that commonly comes up is how do you verify log file truncation actually occurs? The most common method that...
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Part 1: My databases do not automatically mount after I enabled Datacenter...
Datacenter Activation Coordination (DAC) mode is a property of a Database Availability Group (DAG) that, when enabled, forces starting DAG members to acquire permission in order to mount databases....
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Exchange 2010: Mapping DAG network states to cluster network states…
In Exchange 2010 after a Database Availability Group (DAG) is created a series of DAG networks is also created. These DAG networks serve to define how Exchange 2010 servers within the DAG will...
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Exchange 2010: Using seedingPostponed results in a seeded database…
In Exchange 2010 the add-mailboxdatabasecopy command is utilized to add mailbox database copies to database availability group members. When a copy is first added to a member the database is...
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Part 2: Datacenter Activation Coordination and the File Share Witness
In Part 1 of this series, I provided a high level overview of how Datacenter Activation Coordination (DAC) mode works and how the database mount process on startup is affected when DAC mode is enabled....
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Exchange 2010: The mystery of the 9223372036854775766 copy queue…
Database Copy Self-Protection Mode What would you say if I told you that a copy queue length (CQL) of 9 quintillion log files was not a bad thing? By the way, if you are wondering, that works out to a...
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A good read on VSS backups…
http://blogs.technet.com/b/exchange/archive/2012/06/04/everything-you-need-to-know-about-exchange-backups-part-1.aspx
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Part 8: Datacenter Activation Coordination: Stop! In the Name of DAG…
Sometimes, even when following a specific process, it takes only one mistake to send the entire process off course. Recently I’ve worked with several customers on their datacenter switchover steps...
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Part 9: Datacenter Activation Coordination: An error caused a change in the...
As a part of a datacenter switchover process, administrators run Stop-DatabaseAvailabilityGroup to stop DAG members in the failed datacenter. This cmdlet is responsible for updating the...
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Exchange 2013: OutlookMailboxDeeptTestProbe fails with Access Denied
I recently had an opportunity to work with a customer who was experiencing unexpected database failovers between nodes. When looking at the ProbeResults log within the ActiveMonitoring crimson event...
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RPC Filtering and Exchange 2010 Database Availability Groups
Recently I’ve had the opportunity to work with customers who were having issues seeding databases using update-mailboxdatabasecopy in Exchange 2010. When attempting to perform an update the following...
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Exchange 2010: Remove-databaseavailabilitygroupserver–configurationOnly does...
Administrators may encounter conditions where DAG members cannot be gracefully removed from a database availability group. For example, a member server may have encountered an unrecoverable failure or...
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Exchange 2013 Cumulative Update 2 – Where are my databases?
In Exchange Server 2013 Cumulative Update 2 (CU2) we introduced support for a maximum of 100 mounted mailbox databases per server (active or passive) when an Enterprise Edition license is applied....
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Office365: POP and IMAP clients receive OWA links for calendar invitations
As you may know, Office 365 supports a number of different client protocols, including POP and IMAP and a variety of POP and IMAP clients. By default, POP or IMAP clients will be configured to use...
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Exchange 2013: Health Manager service may not reliably start after server boot.
In Exchange 2013 we have introduced managed availability. The managed availability process runs within the Microsoft Exchange Health Manager service (MSExchangeHMHost.exe). After booting a server it...
View ArticleClik here to view.
Verifying log file truncation…
In support we see cases from customers regarding log file truncation. One question that commonly comes up is how do you verify log file truncation actually occurs? The most common method that...
View ArticleClik here to view.
Part 1: My databases do not automatically mount after I enabled Datacenter...
Datacenter Activation Coordination (DAC) mode is a property of a Database Availability Group (DAG) that, when enabled, forces starting DAG members to acquire permission in order to mount databases....
View ArticleClik here to view.
Exchange 2010: Mapping DAG network states to cluster network states…
In Exchange 2010 after a Database Availability Group (DAG) is created a series of DAG networks is also created. These DAG networks serve to define how Exchange 2010 servers within the DAG will...
View ArticleClik here to view.
Exchange 2010: Using seedingPostponed results in a seeded database…
In Exchange 2010 the add-mailboxdatabasecopy command is utilized to add mailbox database copies to database availability group members. When a copy is first added to a member the database is...
View ArticleClik here to view.
Part 2: Datacenter Activation Coordination and the File Share Witness
In Part 1 of this series, I provided a high level overview of how Datacenter Activation Coordination (DAC) mode works and how the database mount process on startup is affected when DAC mode is enabled....
View Article