HP Array Controller HSG V8.7 Software - Manual (Page 422)

B–150 HSG80 User’s Guide
Caution The IMMEDIATE_SHUTDOWN switch causes the
controller to keep unflushed data in the write-back cache until it restarts
and is able to write the data to devices. Do not perform any hardware
changes until the controller flushes the cache.
Specify IMMEDIATE_SHUTDOWN to cause the controller to
shutdown immediately without checking for online devices or before
flushing data from the write-back cache to devices.
Specify NOIMMEDIATE_SHUTDOWN to cause the controller not to
shutdown without checking for online devices or before all data has
been flushed from the write-back cache to devices.
Examples
This example shows how to shut down “this controller:”
SHUTDOWN THIS_CONTROLLER
This example shows how to shut down the other controller, even if it
cannot write all of the write-back cached data to the units:
SHUTDOWN OTHER_CONTROLLER IGNORE_ERRORS
See also
RESTART controller
SELFTEST controller