3.6.0 MxDB for SQL Server Installation and Administration Guide (5697-7088, December 2007)

Chapter 6: Instance Aliasing 88
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Configure Instance Aliasing Settings
The Instance Aliasing feature needs some configuration information to
operate properly. Click the Advanced button on the Instance Aliasing
window to open the Advanced Settings dialog.
Mapping file location. Specify the location of the ia.conf file. The file
should be located on a PSFS filesystem that can be accessed by all nodes
in the matrix. All nodes should use the same drive letter or mount point
for the filesystem.
Refresh rate synch interval. Specify the poll interval, in seconds, for
checking the ia.conf file for configuration changes. The default is 10
seconds.
Enable the Polyserve SQL Browser Service. If you are mapping named
SQL Server instances, you will need to enable the PolyServe SQL Browser
Service. This service is then used instead of the Microsoft SQL Browser
Service, which cannot handle mappings for virtual named instances or
name-to-name redirection.