HP Storage Mirroring Software - Manual (Page 622)

Recommended optimizations Page 621 of 677
Application workloads
Review the following optimizations when you are protecting applications on your source.
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General applications
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Exchange
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SQL
General applications
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Application services on the target—Ensure that all application services on the
target are stopped and set to manual.
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Connection mappings—When protecting an application server, select the One
To One mapping in the
Connection Manager .
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File difference mirrors—When performing a file difference mirror (or file difference
restoration), you may not want to use the Send data only if Source is newer than
Target option, unless you know for certain that it is acceptable. This is particularly
true for database applications since it is critical that all files, not just some of them
that might be newer, are mirrored/restored.
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Mirror using write-through mode—You can set a Storage Mirroring Recover
driver option which allows mirroring to open files in write-through mode which is
the same way many applications, such as Exchange and SQL, open files. This
may improve performance on application servers. Under HKEY_LOCAL_
MACHINE\SYSTEM\CurrentControlSet\Services\RepKap\Parameters, add a
DWORD value called DisableKfaiCaching, and set it to 1.
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Application Notes—HP provides Application Notes on the support site that
provide implementation guidelines on how to protect many popular third-party
applications. If there is no Application Note, contact the application's publisher and
ask what files need to be replicated and what requirements must be met for the
application to start on another server.