text: **2.5.13 Quorum disks**
  
  A quorum disk is an MDisk or a managed drive that contains a reserved area for use 
  exclusively by the system. In IBM Storwize V7000, internal drives can be considered as 
  quorum candidates. The clustered system uses quorum disks to break a tie when exactly half 
  the nodes in the system remain after a SAN failure. 
  
  The clustered system automatically forms the quorum disk by taking a small amount of space 
  from an MDisk. It allocates space from up to three different MDisks for redundancy, although 
  only one quorum disk is active. 
  
  If the environment has multiple storage systems, allocate the quorum disk on different storage 
  systems to avoid the possibility of losing all of the quorum disks because of a failure of a 
  single storage system. It is possible to manage the quorum disks by using the CLI. 
  
  **2.5.14 IP Quorum**
  
  In a HyperSwap configuration, there must be a third, independent site to house quorum 
  devices. To use a quorum disk as the quorum device, this third site must use Fibre Channel 
  connectivity with an external storage system. Sometimes, Fibre Channel connectivity is not 
  possible. In a local environment, no extra hardware or networking, such as Fibre Channel or 
  SAS-attached storage, is required beyond what is normally always provisioned within a 
  system. 