text: IBM Spectrum Virtualize uses 512 bytes block size for volumes that are presented to hosts. 
  
  **7.1.1 Operations on volumes**
  
  The following operations can be performed on a volume: 
  
  (cid:2) Volumes can be created and deleted. 
  
  (cid:2) Volumes can be resized (expanded or shrunk). 
  
  (cid:2) Volumes can be migrated at run time to another MDisk or storage pool. 
  
  (cid:2) Volumes can be mirrored, or mirrored volumes can be split. 
  
  (cid:2) Point-in-time volume can be created by using FlashCopy. Multiple snapshots and quick 
  restore from snapshots (reverse FlashCopy) are supported. 
  
  **Note:**With V7.4 and later, it is possible to prevent accidental deletion of volumes if they 
  recently performed any I/O operations. This feature is called*Volume protection*, and it 
  prevents active volumes, or host mappings from being deleted inadvertently. This process 
  is done by using a global system setting. For more information, see section 7.8.9, “Volume 
  delete protection” on page 303 and the “Enabling volume protection” topic in IBM 
  Knowledge Center. 