November 12, 2008 at 2:22 pm
I have not found any information anywhere to answer this question, so I am turning to the experts here at SSC.
Background: I have inherited a development database server running 64-bit Windows 2003 OS (x64). There are three named instances, all running 32-bit SQL 2005 Enterprise Edition (x86). The application team wants these instances upgraded to 64-bit SQL.
Question: Can a SQL 2005 (x64) instance run concurrently with a SQL 2005 (x86) instance on the same server?
If the answer is yes, I can upgrade the three instances one at a time, resulting in minimal downtime for the developers.
If the answer is no, I have to take all three dev instances from the developers while I upgrade all of the instances, resulting in a full days downtime.
I would appreciate any feedback from anyone who has first-hand experience with this issue. Thanks.
November 13, 2008 at 3:32 am
The short answer is yes, you can run x32 and x64 instances next to each other.
But you cannot upgrade a 32-bit instance to 64 bit.
You need to install new x64 instances next to the exisitng x32 ones.
[font="Verdana"]Markus Bohse[/font]
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