DAC Command Set
flush cache
  The "flush-cache" command flushes
  the controller's cache.  The system
  automatically flushes the cache at
  shutdown or if the driver module is
  unloaded, so this command is only
  needed to be certain a write back cache
  is flushed to disk before the system is
  powered off by a command to a UPS.
  Note that the flush-cache command also
  stops an asynchronous rebuild or
  consistency check, so it should not be
  used except when the system is being
  halted.
make online
  The "make-online" command changes the
   physical drive {channel}:{target-id}
 from status DEAD to status ONLINE.  In
  cases where multiple physical drives
  have been killed simultaneously, this
  command may be used to bring them
  back online, after which a consistency
  check is advisable.

  Warning: make-online should only be
  used on a dead physical drive that is
  an active part of a drive group, never
  on a standby drive.
standby
  The "make-standby" command changes
  physical drive {channel}:{target-id}
  from status DEAD to status STANDBY. It
  should only be used in cases where
  a dead drive was replaced after an
  automatic rebuild was performed onto a
  standby drive. It cannot be used to add
  a standby drive to the controller
  configuration if one was not created
  initially; the BIOS Configuration
  Utility must be used for that currently.
rebuild
   The "rebuild" command initiates an
   asynchronous rebuild onto physical
   drive {channel}:{target-id}.  It
   should only be used when a dead
   drive has been replaced.
consistency
  The "check-consistency" command
  initiates an asynchronous consistency
  check of {logical-drive-number} with
  automatic restoration.  It can be used
  whenever it is desired to verify the
  consistency of the redundancy
  information.
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