Clearing Microsoft Cluster Persistent Reservations

Recently I had the active node on a Microsoft cluster go down hard.  There were 3 applications running in this cluster and 2 came up.  The third would not come up so with a little Googling I found this article from SQLShip.

Microsoft clusters put a reservation on the disk to prevent other nodes from being able to write to them. If that reservation is not cleared and is brought offline then no one will be able to use it.

Go to command prompt with elevated privileges and type in this command.  Replace the # with the disk number that is giving you issues.  This should clear the reservation and allow you to bring everything up.

cluster node servername /clearpr:#

 

Setting up vCenter Update Manager

Recently I was trying to setup vCenter Update Manager for vSphere 6.  I setup the ODBC connection for 32-bit using the ODBC Driver 11 for SQL server.  Setting up this connection was successful, but when I tried to run updates in my vCenter environment I would get an error stating that it could not connect to the database.  This was an odd error because I knew the ODBC connection was successful.  I contacted support and all they told me to do was build up a new update server.  I tried that and it did not work.  So after some deep googling I found a website which stated that you had to setup the update manager service to have a log on as.  (Sorry this was done a few weeks ago, and I do not know what website it was)

So when setting up update manager make sure you configure the server to log on as a certain account.  I did not notice that in any of the documentation.  Maybe I some how missed it.

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