HP Array Controller HSG V8.7 Software User Manual

Page 404

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HSG80 User’s Guide

Specify NODESTROY_UNFLUSHABLE_DATA to leave the
unwritten data intact in the failed controller’s write-back cache. When
the failed controller is replaced and placed into service, the write-back
cache data is flushed to the appropriate devices.

Specify DESTROY_UNFLUSHABLE_DATA to reconfigure the
operational controller before replacing the failed controller. The
unwritten data of the failed controller may reference devices not present
in the new configuration. If you do not destroy the old configuration
data, it may conflict with the new configuration and cause the
subsystem to behave unpredictably.

Caution Unflushed data cannot be recovered after it is destroyed.

Example

This example shows how to terminate failover mode between two
controllers in a dual-redundant configuration and destroy any cache
data that remains in either controller’s cache:

SET NOMULTIBUS_FAILOVER DESTROY_UNFLUSHABLE_DATA

See also

SET FAILOVER
SET MULTIBUS_FAILOVER
SET NOFAILOVER

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