text: (cid:2) Unmounting all file systems that were created on IBM Spectrum Virtualize volumes (for file 
  systems created directly on IBM Spectrum Virtualize volumes) or bringing offline all logical 
  volume groups by using volumes that are presented by the IBM Spectrum Virtualize 
  system. 
  
  (cid:2) Accepting loss of access to storage for volumes that are mirrored at the operating system 
  level. 
  
  For volumes that are mirrored at the operating system level, loss of one of the data copies 
  triggers errors in the operating system and causes a loss of redundancy because the data 
  copies go out of sync. 
  
  **Note:**Some applications (for example, databases), can use a volume that is not mounted 
  as a file system. Make sure that no volumes that are presented by the IBM Spectrum 
  Virtualize are in use on a host if you want to shut down the storage system but not the host. 
  
  Before shutting down the system, ensure that you stopped all FlashCopy mappings, remote 
  copy relationships, data migration operations, and forced deletions. 
  
  Storwize V7000 control enclosures contain batteries that provide backup power to the system 
  to protect against unforeseen loss of power. When AC power to the enclosure is interrupted 
  for more than approximately 10 seconds, the system starts system state dump procedure, 
  which includes saving cached data to an internal drive. 