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Using Virtual IP addresses with HADR in addtion to automatic client reroute

A consultant has recommended to us that we use virtual IP addresses for our
HADR databases (the virtual IP address is moved when the primary database is
moved to other server), even though automatic client reroute should be able
to point applications to the correct primary HADR database. The consultant
is concerned about a split brain (both servers think they are the primary),
especially when the original primary server crashes, an HADR takeover by
force is issued on the standby, and then the server is brought back
on-line..

I have not seen anything in IBM documentation or the TSA/HADR white papers
that recommends using virtual IP addresses if automatic client reroute is
available. Does anyone have thoughts or real world experiences on this
issue?
Jan 23 '06 #1
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