Richard,

"BTDTGTTS"

We are running tsm using san attached emc for all disk storage.  On initial
setup of the emc, we decided to stop using log/db mirroring, and use the emc
mirroring instead.

Soon afterwards, we had 2 instances where we could not restart the server.
Both times the server failed to restart because of an inconsistency in the
db log file.  The emc mirroring had faithfully replicated the inconsistency,
of course.  In each case, the database had to be restored.  Given a 35 GB
database, a restore can take about 2.5 hours.

IBM said that they "strongly recommend tsm mirroring", preferably with
verification.

So do we, now.

regards

-=Dave=-
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